Vibrators aren’t just for “back massages” anymore! University of Alberta professor David Ley has been using Lelo‘s ultra-powerful external vibe SIRI (pictured above) to help Canada’s performing artists sing and speak with clearer, stronger voices. The SIRI massages vocal cords to reduce vocal tension — it works because the frequency emitted by SIRI, which is between 110 and 120 hertz, matches that of the human voice. The massage is not too hard, not too soft, but just right for relaxing the delicate vocal muscles that give us our voice. Now laryngitis is the perfect excuse to invest in a nice, new sex toy!