The First Suite in E♭ for Military Band, Op. 28, No. 1, by the British composer Gustav Holst is considered one of the cornerstone masterworks in the concert band repertoire. Officially premiered in 1920 at the Royal Military School of Music, the manuscript was originally completed in 1909. Along with the subsequent Second Suite in F for Military Band, written in 1911 and premiered in 1922, the First Suite convinced many other prominent composers that serious music could be written specifically for band.