The value of any item connected to a musician or musicians depends on who it is and what the item is. Letters, autographs, personal items, can be of interest depending on how unique the items are. Sheet music, especially if it is an original publication from the era prior to the recording revolution is highly sought. Obscure or peculiar objects, while they may generate curiosity, have limited value, unless they cross fields of interest. If this is the case, multiple collectors will be seeking to acquire the item(s).