My neighbour is very loudly playing Summer Nights from Grease on their electric guitar. I'm pretty sure they've got their amp cranked up to 11 and facing out a window.

This would be all fine and dandy if they actually finished any of the songs they're playing. It's pretty annoying when they start playing Summer Nights and I'm like yes! Who doesn't love Grease? and then they stop and play something else for another five seconds.