I don't

i listen to white noise and classical music

depends on my mood tbh

music, i have a playlist with my fiance for those purposes

while i can sleep through sounds at this point listening to music would probably keep me awake more often than helping me sleep.

there were incidents in childhood when id have an audiobook playing when i slept.

No, I need silence to sleep.

I usually don't need such things, but on emotional nights I'll often use Rainymood

No. They give me nightmares

i do sometimes... either to an album by onerepublic called human, a sleep playlist from spotify (through spotube), or just to random spotube recommendations