Haydn’s thirty Piano Trios were written between 1784 and 1797, reflecting both changes in keyboard instruments, as the piano replaced the harpsichord, and developments in sonata form. The Trios included here, dating from the earlier years of this period, are lively, eloquent and often innovative works. The E fl at major Trio, Hob XV:11 won particular contemporary praise for its increased technical challenges and subtle interplay between strings and piano.