I can't really sing. What do you think about an instrumental version of Scarborough Fair? I have an arrangement in mind. If I manage the time, I'll put down a piano backing track, and "band members" can fill in the parts.
No worries about speed of progress - like you and many others here, I have a non-music day time job, so this is something to fit in-between work and family time.
I'm sure I could play along your prog rock song too.
There are many ways for online collaboration - to me this exercise is to understand how Bandlab can be used as the collaboration tool.
The other day I was playing around with CbB's new Export To Bandlab function : it uploaded it to Bandlab as a 'published' version - in other words - public. If I could have a feature request - I would want the choice of whether the upload should be Private, or Published. As for example after making a Backing Track on CbB for "our" band - I would then want to export it to CbB privately only to the Band page first - as obviously it would not be in a form that is ready for the public yet.
Wei Liang