OHM (sometimes stylized Ohm: or OHM:) is an American instrumental rock/jazz fusion group fronted by former Megadeth guitarist Chris Poland.The band was formed in 2002 and has released three studio albums and a live album.A similar offshoot band named OHMphrey, also fronted by Poland, was formed in 2008. The band would often perform at the Baked Potato jazz club in Studio City, which is a neighborhood of Los Angeles.On May 21, 2016, drummer Nick Menza died from heart failure while performing on stage with OHM at the Baked Potato jazz club.