Phil 'Spector' Documentary Intro Song

UPDATE: The artists are Dan Reynolds & Daniel Wayne Sermon from Imagine Dragons and Aja Volkman, frontwoman of Nico Vega. It's an original composition for the show. Can someone please tell me the name of this song? Can't find it anywhere... Here are the lyrics: Daydreaming bout you So glad I found you I was lost without you I'll sing a little louder So mad about you I was lost without you I'll sing a little louder