Richard,

I don't know if you listened to the song or not, but this song isn't suitable for BIAB. Each instrument has a specific part of the "hook". Even the bass line needs to be played exactly as "written" since it's also part of the hook.

The only thing BIAB could contribute to it to my satisfaction would be drums.

A lot of the songs I've written work out well in BIAB. This ain't one of them.