What am I

I have always loved singing but I have always been a very timid singer. Recently singing opportunities have introduced themselves. I have already told you that I am an Easter musical, in English, at our church. I didn’t know what part I would be so I took the alto part. I haven’t sung in a choir since elementary school and I am having a challenging part learning the harmony. The notes are not too low for me. Then today I went to worship practice. I will be helping lead worship a few times at our field forum in a few weeks. Today I was singing the soprano melody part and I did fine. I guess I’m a confused singing. I don’t know what part to sing or what fits me best.