Here's some brd tests, I just eyeballed it with Statustimer.
Victory March (Naked): 120 sec
Victory March (+2) : 142 sec
Victory March (+2, AF3 Neck): 156
Victory March (+2, AF3+2 Body): 160 sec
Victory March (+3) : 155 sec
Victory March (+3, AF3 Neck) : 167 sec
Victory March (+3, AF3+2 Body): 168 Sec
Victory March (+3, AF3+2 Body, AF3 Neck): 180 sec
3 Minute songs are awesomeee
also I didn't pay much attention to the set bonuses before, but I think something's wrong...according to the old AF3+2 info on BRD, it gave +2 stats for every one AF3+2 piece?
Now it's giving half... If I wear 2 it gives +1 to a stat related to the song.
So wearing a 5th piece doesn't do anything more than 4 pieces.