Bugged Bugs

[Heavyfog]

The Roaches in the Abandoned Residence quest in Lower seem to be buffed by PC bard songs.  I can confirm the animation for said buffing occurs on all roaches in range, however I didn't look at the Combat Log to confirm the buff.  It seems strange these bugs like music so much, unless these Roaches are not Roaches at all and are in fact 'Beatles'... ;)