Have you tried fear kiting? It wouldn't be possible to do with all 5 songs if it weren't for the fact that all detrimental songs are on a minimum 18s duration. It's also why all of our DoTs hit 3 times, since the server ticks every 6 seconds.
You'd have to find the bug report, but I think it was 2 years ago the beneficials also lived by the 3-tick rule. Meaning they lasted 18 seconds and it *was* possible to keep up 4-5 songs without a drop. But they changed it, because someone found evidence of a song only lasting 12-18 seconds, and the "3-tick" idea came from people noticing the high-end duration of songs.
That nerf made the next day of circle kiting reaaaal fun.
Found the bug report on the nerf:
http://www.project1999.org/forums/sh...ad.php?t=57246