>There's no set convention - it depends on the band and the occasion.
>
>In this case, five songs into the planned 20-song show was the first
>time they actually stopped playing long enough for Yui to do it, which
>is not that unusual for bands that do a lot of up-tempo stuff.
>

I have learned a new thing! Eyrie Productions, doing their part to educate the musically challenged.