The Additional Music Collection contains approximately 13, 000 items. It consists of printed sheet music, vocal music, (mostly popular songs) piano music, ballads, piano arrangements of opera numbers, instrumental music for piano and harp, Irish country dances, collections and arrangements of Irish airs and variations and miscellaneous material.
The collection includes material relating to little known Irish composers. Very few of these items can be found in other Irish and British libraries
13, 052 items bound into approx 570 volumes.