A good idea I had (about buskers)

I had this idea: 

How great would it be if the street musicians you see performing in the subway or in busy public areas let you sing with them live-karaoke-style?! (Answer: pretty great!)

Hear me out.

• It wouldn't work for every musician.  It has to be someone who does covers.  And they'd have to be fine just playing and singing on their own; it couldn't hinge on the event of karaoke.
• Live Karaoke is already a thing - a popular and very cool thing.  I've done it.  It was fun.
• The transit system (and the street) are venues where, for performers, engagement is already really low; people aren't there to hear this band or musician.  Defying expectations by engaging a member of the public - both for the person brought temporarily into the band and for casual observers - grabs attention and turns the energy way up by introducing an element of risk.  The performance becomes a special event, not just background noise.

That's all.  I think it would be a MAGICAL development in street performing if, occasionally, a performance was built to accommodate (but not dependent upon) the participation of passersby.  At the very least, I think some marketing campaign could co-opt this idea to good effect. 

You're welcome!

What's your latest good idea? Leave a comment! The world need to know!!!