Piano Concerto No. 1 in D minor, Op. 15 is a concerto by the German composer Johannes Brahms, composed in 1858. The work combines Romantic-era orchestral depth and virtuosic piano writing with expansive thematic development and symphonic treatment of the soloist, and it occupies a formative place in Brahms's career as an early large-scale orchestral statement that presaged his later symphonies.