The collections of the music department currently comprise ca.

• 68,000 music autographs and manuscript copies
• about 480 literary estates
• 80,000 letters
• 8,000 pictures and portraits
• 500,000 music prints
• 120,000 books
• 20,000 libretti and 
• 43,000 sound carriers

Collections development, cataloguing and classification are being continued.

Excellent collections of autographs like the Bach collection, and the Beethoven collection, as well as the collections relating to Mozart, Mendelssohn and Weber underline the outstanding value of the music department and its unique importance for research.