My new jazz band

We just met last Saturday and we’ll be having 2 more rehearsals before the school concert. We’re so new, we don’t even have a name yet.
Sounds drastic? Well, we’ve been practising on our own and finally are merging our efforts and working out the kinks.
We’ll be playing two jazz numbers – one’s an old favourite that’s been remade recently, and the other will be something I composed. This will be my third school concert (held every 2 years) and also the third time I will be performing my own song.
This time, it won’t be an instrumental piece, but a song with full lyrics. I won’t be singing (though I’d like to!) but we do have a young man who will be doing the honours.