Weight: instrument weight
Estimated Value: 100 gp
While you are playing this musical instrument, you can create harmless, illusory visual effects within a 5—foot—radius sphere centered on the instrument. If you are a bard, the radius increases to 15 feet. Sample Visual effects include luminous musical notes, a spectral dancer, butterflies, and gently falling snow. The magical effects have neither substance nor sound, and they are obviously illusory. The effects end when you stop playing.
Source: Xanathar's Guide to Everything p137