You sound a lot like Jake Thackray on Bookshelf.

So what are you saying, Jake Thackray sounds like a bad impression of Kermit the Frog?

VIDEO EVIDENCE OF THIS COMPO

If you ever wanted to know what I do in the studio during these multi-song OHBs, watch this! ^

I did wonder how you fit it all in. Props on the left handed drumming! So... do you play an instrument and do all 6 songs on that, then move on to another instrument and so on.. or method b?

Method B, always. :D
Usually what I do is, whatever idea I have for the next song, I start with the main instrument for that song, and build around it. If possible, I will try to use that instrument one more time to start another song, just to save time, but I don't always.

You can usually tell which ones started with drums, cause they will have all sorts of tricky rhythm changes or stop-start stuff.
It kinda all depends what mode I'm in that day! Sometimes it's more computery software instruments and sometimes it's more live stuff like guitars and drums. Usually though, I like to do as much variety as possible. Kind of a shame that the one compo I video recorded doesn't have that much going on!