I watched Kurt for maybe 5 or 6 minutes and he seemed very smooth. using backing tracks...making it work pretty well with the occasional dropout.

LaniLei's music was too low but you could just make it out.

I think this emulates live performance pretty well because you are performing live and folks are listening live so it is very different than a YouTube video. plus there is some interaction between listeners and the artist as well as the opportunity to tip the artist.