"Gonna' Rain Again" sounds great! The only things that I could hear, that might need a looking at are... The piano and vocals seemed to clash with each other a bit. Maybe spreading them out from each other a bit would help... maybe pan one 10-20% left and the other 10-20% right. Also, the guitar had this semi high pitched "snap" to it that wasn't very pleasing to my ears, but other than that, it sounded great and fit the song perfect. Great job!

"Avion" sounds great aswell! I think it could work as an instrmental or a vocal piece. I can't help with any lyrics though. That's one things I've never been able to do :(

Keep up the great work!