Complex sentence: Mitchell Allan Scherr, professionally known as Mitch Allan, is a Grammy-nominated producer, songwriter, lead singer, and guitarist of rock band SR-71, as well as the lead guitarist, backing vocalist and producer of alternative project Satellite.
Split into simpler sentences: Mitchell Allan Scherr, professionally known as Mitch Allan, is a Grammy-nominated producer, songwriter, and musician. Allan is also the lead singer and guitarist of rock band SR-71, as well as the lead guitarist, backing vocalist and producer of alternative project Satellite.