Matthew Bair, known professionally as Matthew Koma and Bagel Man, is an American singer, songwriter and musician. Songs written or co-written by Koma include "Spectrum", "Find You", and Grammy Award-winner "Clarity", all produced by Zedd. Koma has collaborated with artists such as Shania Twain, Britney Spears, Hilary Duff, Hardwell, Zedd, Miriam Bryant, Sebastian Ingrosso, Alesso, Afrojack, Tiësto, Vicetone, Ryan Tedder of OneRepublic, and others.