Music is related to Tone. Tone is a type of Interval. 
Listener is related to Ear. Ear is a different concept from Nose. Nose is related to Device. Tool is a type of Device. 
Music <--RelatedTo--> Tone --IsA--> Interval 
Listener <--RelatedTo--> Ear <--DistinctFrom--> Nose <--RelatedTo--> Device <--IsA-- Tool 