List of Relevant Dataset categories

ImageNet Synsets

Guitars

n03467517 - guitar
n02804123 - bass guitar
n10151760 - guitarist (no bounding boxes)
n02676566 - acoustic guitar
n03272010 - electric guitar
n03499907 - Hawaiian guitar, steel guitar

Singers

n10599806 - singer, vocalist, vocalizer, vocaliser (no bounding boxes)

Drums

n03249569 - drum, membranophone, tympan
n02803666 - bass drum, gran casa (no BBs)
n04249415 - snare drum, snare, side drum
n04410086 - tenor drum, tom-tom (no BBs)

OpenImage

http://www.cvdfoundation.org/datasets/open-images-dataset/vis/index.html

Guitars

Visualize Label: Guitar

Drums

Visualize Label: Drum