Dream About Choir And Pull Up Bar

I had a dream that seemed to be a choir event. I was at a random place with a random group of people and a did a really high note and everyone looked at me and then my history teacher led me to an unfamiliar playground and said something like "next time you're bored just go over here, kid" and then there was a really high pull up bar and out of nowhere a classmate I had a dream of in the past showed up and I tried going to the pull up bar but he got in my face and just stared at me for a moment then got on the pull up bar and just hanged there then fell down and sat up and just looked at me, then I woke up.