I'm seeing these all over the place, now. Floor pedals with LONG recording times in them, sometimes with multiple loops, overdubbing, even some with MIDI clock...

A solo guitarist plays the first verse and chorus (or just the head, for the jazzers!) while he sings over the top. He then hits the pedal for the loop, and he solos over the top of the accompaniment that just got recorded. Or he can sing a second V/C or head and add in another rhythm part, or even a bass line, THEN solo over the top...

I even saw KT Tunstall do her hit "Black Horse and the Cherry Tree" entirely live using a looper, including percussion parts, everything... even her background vocals. Check it out http://www.youtube.com/watch?v=HYEU91d8ngc

Pretty cool, and a LOT of guitarists in my area are using these, now.

Remind you of anything? That we USED to have?