Hello. So measure 55 is called a divisi. It is an Italian word that means that half the players in your trombone section should play the top Bb and the other players should play the bottom Bb. You can't play both notes by yourself. You can either decide as a section who is going to play which note or you can ask your band teacher which you should play. If you can't hit the top note, then just play the low one. I hope that helped.
Wow I played 37 to 50 in this song completely wrong or maybe it’s because I have to play with starter band players and the tempo isn’t the same as how my band played it, it was way slower then this
Me who has the sheet music but don’t have it cause it’s at school and I’m going to be playing it at my concert TROMBONES TONIGHT WE GO INTO 8TH POSITION (if you don’t know that’s when your slide goes off your trombone) 👇