Music, Maestro!

I was in the pub yesterday when I suddenly realised I desperately needed to break wind. The music was really, really loud, so I timed it with the beat.
After a couple of songs, I started to feel better. I finished my pint and noticed that everybody was staring at me.
It was then I realised:
After a couple of songs, I started to feel better. I finished my pint and noticed that everybody was staring at me.
It was then I realised:
Spoiler: