click the block, or press 2 to activate keyboard mode (keys QWERTYUIOPASDFGHJKLZXCVB) hold it down for a compressed version of a note block loop i've made that got the disgusting pop noise (which didn't have before)
credits to LynchMob10-09 (on [art] that is [deviant]) for the note block texture and the wiki for other stuff, and Mojang for having these things exist sprite modifications and code made by me as usual the note block was made based on the wiki