While it's difficult to definitively state which piece Mozart liked most among his own works, as he didn't explicitly declare a favorite, some insights can be gleaned from historical accounts and musical analysis:
1. The **Requiem** is often considered one of Mozart's most cherished compositions. Despite being unfinished at the time of his death, it showcases his emotional intensity and musical genius, even amid personal turmoil[1].
2. The **Piano Fantasy in C minor** is noted for its dramatic depth, particularly in its use of minor keys. Mozart's works in minor keys are often seen as his most philosophical and emotionally profound compositions[1].
3. The **Piano Concerto No. 24 in C minor, K491** is highlighted for its dark grandeur and clever use of wind instruments, demonstrating Mozart's mastery of orchestration[1].
4. Mozart's **String Quintets** were also highly regarded, with some musicians describing them as a perfect blend of humanity and divinity in music[1].
While these pieces are often cited as among Mozart's finest works, it's important to note that his preferences may have varied throughout his life. Mozart's genius is evident across his vast repertoire, making it challenging to pinpoint a single "favorite" piece.
Sources
[1] Favourite Mozart piece? Ten top performers choose | Classical Music https://www.classical-music.com/features/works/favourite-mozart-piece
[2] Mozart's Eight Happiest Pieces of Music - Interlude.hk https://interlude.hk/mozarts-eight-happiest-pieces-of-music/
[3] The 9 Mozart Pieces Every Piano Player Needs to Know - Flowkey https://www.flowkey.com/en/mozart-piano-pieces
[4] What (in your opinion) is Mozart's absolute best piece in terms of him being a composing genius? https://www.reddit.com/r/musictheory/comments/1aj1uck/what_in_your_opinion_is_mozarts_absolute_best/
[5] What do you think is the greatest ever piece by Mozart? - Reddit https://www.reddit.com/r/classicalmusic/comments/11zui25/what_do_you_think_is_the_greatest_ever_piece_by/
[6] The 15 greatest pieces of classical music by Mozart https://www.classicfm.com/composers/mozart/best-pieces-classical-music/
[7] Metronaut | 10 of Mozart’s Essential Pieces (part 1) https://metronautapp.com/metronaut-blog/10/mozart-essential-pieces
[8] The 10 most life-changing pieces of music by Mozart https://www.classicfm.com/composers/mozart/most-life-changing-pieces-music/