Actually I learn trumpet for like a year and I got demotivated in part because with my teacher we were only doing exercises and learning music theory, but almos

Actually I learn trumpet for like a year and I got demotivated in part because with my teacher we were only doing exercises and learning music theory, but almost never playing a piece of music. I was able to play many notes and scales with the trumpet, but I didn't knew how to play a song (just a part of "When The Saints Go Marching In"). As I read above in the comments, replace "building" by "playing".