need help with an easy piece

Hey, I'm quite a beginner and I'm gonna have to play "Merry Christmas Everyone" in front of a huge crowd soon. I can't get the sheet music. I've figured out how to play the main melody line, but I still can't play the solo (Shakin' Stevens version). Can you help me? I would really appreciate it. It would also be great if you have some ideas how to arrange it for 2 alto saxophones (I could play with my friend then).
Thanks a lot!