Felix Mendelssohn's Piano Trio No. 1 in D minor, Op. 49, was completed on 23 September 1839 and published the following year. The work is scored for a standard piano trio consisting of violin, cello and piano. The trio is one of Mendelssohn's most popular chamber works and is recognised as one of his greatest.
During the initial composition of the work, Mendelssohn took the advice of fellow composer Ferdinand Hiller to revise the piano part.
The revised version was in a more romantic, Schumannesque style with the piano given a more important role in the trio. Indeed, the revised piece was reviewed by Schumann, who declared Mendelssohn to be "the Mozart of the nineteenth century, the brightest musician, who most clearly understands the contradictions of the age and is the first to reconcile them.