I felt glad when I became to play a difficult song with my sax.
I was in the brass band club.
When I tried the song for the first time, I couldn't play it well.
However, I became playing it well because I practiced very hard to play the song. So, I felt very glad.
Are These sentences correct?

質問を翻訳

not really... here is a re-write (I'm trying to write it, how I would say it)
I'm assuming this is all in the past?


I played sax in the brass band.
It felt great to do a really good job on a difficult song.
The first time I'd tried it, I couldn't play it well.
But I practiced very hard and eventually played it well.
So, I was super happy.