Minecraft wiki entry for Redstone_music, associated text: Bass = Wood (any type), mushroom (block), daylight sensor, banner, sign, note block
Bass drum = Stone (any type), bricks, netherrack, magma block, purpur block, concrete, nether quartz
Bell = Block of gold
Chime = Packed ice
Clicks and sticks = Glass (any type), sea lantern
Flute = Clay block
Guitar = Wool
Snare drum = Sand, gravel, concrete powder
Xylophone = Bone block
Piano (harp) = Any other block (e.g. dirt, piston, rail, leaves)
Iron Xylophone = Block of Iron
Cowbell = Soul Sand
Didgeridoo = Pumpkin
Bit = Block of Emerald
Banjo = Hay Bale
Pling = Glowstone