I think the key words here are "3 minutes" and "floorsinger"!

Effectively that's making your intro the same length as someone else's entire floorspot! That's saying "my song is more important than your song". I'm willing to bet that that floorsinger probably went on to sing a song that was a lot longer than everyone else's too. There's always one...

(I went to a screening of "Cracked Actor", the 1974 David Bowie documentary, at the ICA on Sunday. Afterwards there was a Q&A with the director. One particularly obsessive audience member just didn't seem to understand the concept: his question turned out to be a three questions, prefaced by a lengthy rambling preamle, and the microphone had to be positively wrestled away from him)