Album stumbling block.

So just as I get ready to finish my album, there is always some stumbling block to try and stop the process. I thought I was finished just to find out that I have to record one more song, due to a producer disappearing on me, WITH ONE OF THE SONGS!. He will remain nameless. So how do I solve this problem? I use one of the songs that I have written for my second album, only, those songs don't make sense for this album. So I will write another this week, specifically for this album. Any ideas anyone?

Anyway problem solved right? Now, I have to take the time to RECORD the song. Luckily I can knock it all out very quickly in the studio. Hummm...what a day!