The Five (Russian: Могучая кучка, lit. 'Mighty Bunch'), also known as the Mighty Handful or The Mighty Five, were five prominent 19th-century Russian composers who worked together to create a distinct national style of classical music: Mily Balakirev (the leader), César Cui, Modest Mussorgsky, Nikolai Rimsky-Korsakov and Alexander Borodin. They lived in Saint Petersburg and collaborated from 1856 to 1870.

Mily Alexeyevich Balakirev (UK: bə-LA(H)K-i-rev, US: BAH-lah-KEER-ef; Russian: Милий Алексеевич Балакирев, pronounced [ˈmʲilʲɪj ɐlʲɪkˈsʲe(j)ɪvʲɪdʑ bɐˈlakʲɪrʲɪf] ; 2 January 1837 [O.S. 21 December 1836] – 29 May [O.S. 16 May] 1910) was a Russian composer, pianist, and conductor known today primarily for his work promoting musical nationalism and his encouragement of more famous Russian composers, notably Pyotr Ilyich Tchaikovsky. He began his career as a pivotal figure, extending the fusion of traditional folk music and experimental classical music practices begun by composer Mikhail Glinka. In the process, Balakirev developed musical patterns that could express overt nationalistic feeling. After a nervous breakdown and consequent sabbatical, he returned to classical music but did not wield the same level of influence as before. In conjunction with critic and fellow nationalist Vladimir Stasov, in the late 1850s and early 1860s, Balakirev brought together the composers now known as The Five (a.k.a., The Mighty Handful) – the others were Alexander Borodin, César Cui, Modest Mussorgsky, and Nikolai Rimsky-Korsakov. For several years, Balakirev was the only professional musician of the group; the others were amateurs limited in musical education. He imparted to them his musical beliefs, which continued to underlie their thinking long after he left the group in 1871, and encouraged their compositional efforts. While his methods could be dictatorial, the results of his influence were several works which established these composers' reputations individually and as a group. He performed a similar function for Tchaikovsky at two points in the latter's career – in 1868–69 with the fantasy-overture Romeo and Juliet, and in 1882–85 with the Manfred Symphony. As a composer, Balakirev finished major works many years after he had started them; he began his First Symphony in 1864 but completed it in 1897. The exception to this was his oriental fantasy Islamey for solo piano, which he composed quickly and remains popular among virtuosos. Often, the musical ideas normally associated with Rimsky-Korsakov or Borodin originated in Balakirev's compositions, which Balakirev played at informal gatherings of The Five. However, his slow pace in completing works for the public deprived him of credit for his inventiveness, and pieces that would have enjoyed success had they been completed in the 1860s and 1870s made a much smaller impact. Balakirev began work on a second symphony, Symphony No. 2 in D minor in 1900, but did not complete the work until 1908.

Mily Alexeyevich Balakirev (UK: bə-LA(H)K-i-rev, US: BAH-lah-KEER-ef; Russian: Милий Алексеевич Балакирев, pronounced [ˈmʲilʲɪj ɐlʲɪkˈsʲe(j)ɪvʲɪdʑ bɐˈlakʲɪrʲɪf] ; 2 January 1837 [O.S. 21 December 1836] – 29 May [O.S. 16 May] 1910) was a Russian composer, pianist, and conductor known today primarily for his work promoting musical nationalism and his encouragement of more famous Russian composers, notably Pyotr Ilyich Tchaikovsky. He began his career as a pivotal figure, extending the fusion of traditional folk music and experimental classical music practices begun by composer Mikhail Glinka. In the process, Balakirev developed musical patterns that could express overt nationalistic feeling. After a nervous breakdown and consequent sabbatical, he returned to classical music but did not wield the same level of influence as before. In conjunction with critic and fellow nationalist Vladimir Stasov, in the late 1850s and early 1860s, Balakirev brought together the composers now known as The Five (a.k.a., The Mighty Handful) – the others were Alexander Borodin, César Cui, Modest Mussorgsky, and Nikolai Rimsky-Korsakov. For several years, Balakirev was the only professional musician of the group; the others were amateurs limited in musical education. He imparted to them his musical beliefs, which continued to underlie their thinking long after he left the group in 1871, and encouraged their compositional efforts. While his methods could be dictatorial, the results of his influence were several works which established these composers' reputations individually and as a group. He performed a similar function for Tchaikovsky at two points in the latter's career – in 1868–69 with the fantasy-overture Romeo and Juliet, and in 1882–85 with the Manfred Symphony. As a composer, Balakirev finished major works many years after he had started them; he began his First Symphony in 1864 but completed it in 1897. The exception to this was his oriental fantasy Islamey for solo piano, which he composed quickly and remains popular among virtuosos. Often, the musical ideas normally associated with Rimsky-Korsakov or Borodin originated in Balakirev's compositions, which Balakirev played at informal gatherings of The Five. However, his slow pace in completing works for the public deprived him of credit for his inventiveness, and pieces that would have enjoyed success had they been completed in the 1860s and 1870s made a much smaller impact. Balakirev began work on a second symphony, Symphony No. 2 in D minor in 1900, but did not complete the work until 1908.

In mid- to late-19th-century Russia, Pyotr Ilyich Tchaikovsky and a group of composers known as The Five had differing opinions as to whether Russian classical music should be composed following Western or native practices. Tchaikovsky wanted to write professional compositions of such quality that they would stand up to Western scrutiny and thus transcend national barriers, yet remain distinctively Russian in melody, rhythm and other compositional characteristics. The Five, made up of composers Mily Balakirev, Alexander Borodin, César Cui, Modest Mussorgsky, and Nikolai Rimsky-Korsakov, sought to produce a specifically Russian kind of art music, rather than one that imitated older European music or relied on European-style conservatory training. While Tchaikovsky himself used folk songs in some of his works, for the most part he tried to follow Western practices of composition, especially in terms of tonality and tonal progression. Also, unlike Tchaikovsky, none of The Five were academically trained in composition; in fact, their leader, Balakirev, considered academicism a threat to musical imagination. Along with critic Vladimir Stasov, who supported The Five, Balakirev attacked relentlessly both the Saint Petersburg Conservatory, from which Tchaikovsky had graduated, and its founder Anton Rubinstein, orally and in print. As Tchaikovsky had become Rubinstein's best-known student, he was initially considered by association as a natural target for attack, especially as fodder for Cui's printed critical reviews. This attitude changed slightly when Rubinstein left the Saint Petersburg musical scene in 1867. In 1869 Tchaikovsky entered into a working relationship with Balakirev; the result was Tchaikovsky's first recognized masterpiece, the fantasy-overture Romeo and Juliet, a work which The Five wholeheartedly embraced. When Tchaikovsky wrote a positive review of Rimsky-Korsakov's Fantasy on Serbian Themes he was welcomed into the circle, despite concerns about the academic nature of his musical background. The finale of his Second Symphony, nicknamed the Little Russian, was also received enthusiastically by the group on its first performance in 1872. Tchaikovsky remained friendly but never intimate with most of The Five, ambivalent about their music; their goals and aesthetics did not match his. He took pains to ensure his musical independence from them as well as from the conservative faction at the Conservatory—an outcome facilitated by his acceptance of a professorship at the Moscow Conservatory offered to him by Nikolai Rubinstein, Anton's brother. When Rimsky-Korsakov was offered a professorship at the Saint Petersburg Conservatory, it was to Tchaikovsky that he turned for advice and guidance. Later, when Rimsky-Korsakov was under pressure from his fellow nationalists for his change in attitude on music education and his own intensive studies in music, Tchaikovsky continued to support him morally, told him that he fully applauded what he was doing and admired both his artistic modesty and his strength of character. In the 1880s, long after the members of The Five had gone their separate ways, another group called the Belyayev circle took up where they left off. Tchaikovsky enjoyed close relations with the leading members of this group—Alexander Glazunov, Anatoly Lyadov and, by then, Rimsky-Korsakov.

Pyotr Ilyich Tchaikovsky ( chy-KOF-skee; 7 May 1840 – 6 November 1893) was a Russian composer of the Romantic period. He was the first Russian composer whose music made a lasting impression internationally. Tchaikovsky wrote some of the most popular concert and theatrical music in the classical repertoire, including the 1812 Overture, his First Piano Concerto, the Violin Concerto, the Romeo and Juliet Overture-Fantasy, several symphonies, the opera Eugene Onegin, and the ballets Swan Lake, The Sleeping Beauty and The Nutcracker. Although musically precocious, Tchaikovsky was educated for a career as a civil servant as there was little opportunity for a musical career in Russia at the time and no public music education system. When an opportunity for such an education arose, he entered the nascent Saint Petersburg Conservatory, from which he graduated in 1865. The formal Western-oriented teaching Tchaikovsky received there set him apart from composers of the contemporary nationalist movement embodied by the Russian composers of The Five, with whom his professional relationship was mixed. Tchaikovsky's training set him on a path to reconcile what he had learned with the native musical practices to which he had been exposed from childhood. From that reconciliation, he forged a personal but unmistakably Russian style. The principles that governed melody, harmony, and other fundamentals of Russian music diverged from those that governed Western European music. There seemed to be little potential for using Russian music in large-scale Western composition or for forming a composite style, and this caused personal antipathies that dented Tchaikovsky's self-confidence. Russian culture exhibited a split personality, with its native and adopted elements having drifted apart increasingly since the time of Peter the Great. That resulted in uncertainty among the intelligentsia about the country's national identity, an ambiguity mirrored in Tchaikovsky's career. Despite his many popular successes, Tchaikovsky's life was punctuated by personal crises and depression. Contributory factors included his early separation from his mother for boarding school followed by her early death, the death of his close friend and colleague Nikolai Rubinstein, his failed marriage to Antonina Miliukova, and the collapse of his 13-year association with the wealthy patroness Nadezhda von Meck. Tchaikovsky's homosexuality, which he kept private, has traditionally also been considered a major factor, though some scholars have downplayed its importance. His dedication of his Sixth symphony to his nephew Vladimir Davydov and the feelings he expressed about Davydov in letters to others have been cited as evidence for romantic love between the two. Tchaikovsky's sudden death at the age of 53 is generally ascribed to cholera, but there is an ongoing debate as to whether cholera was indeed the cause and whether the death was intentional. While his music has remained popular among audiences, critical opinions were initially mixed. Some Russians did not feel it sufficiently represented native musical values and expressed suspicion that Europeans accepted the music for its Western elements. In an apparent reinforcement of that claim, some Europeans lauded Tchaikovsky for offering music more substantive than exoticism, and said he transcended the stereotypes of Russian classical music. Others dismissed Tchaikovsky's music as deficient because it did not stringently follow Western principles.

The following is a list of compositions by Russian composer Mily Balakirev. All are for solo piano unless otherwise indicated below.