John Field's Piano Concerto in A-flat major (H. 31) was composed by 1811[1] and published in full first in Leipzig in 1816.
Field wrote the composition using the more lyric, subdued, slightly melancholy style typical of late Mozart, rather than the joyous "happy-go-lucky mood" of Haydn or the bombastic display of Beethoven.
In addition, it is imbued with lyric themes and even instrumental embellishments which are reminiscent of those from the composer's native Ireland.
The influence of his mentor Muzio Clementi (who was apparently an admirer of Mozart) was also important especially in the more Romantic features of the work.
Field's compositions were very popular in the 19th century, but he became relatively unknown during the 20th as musical fashions changed.