Karl began writing songs before he could even play an instrument. His earliest influences were his parents' record collection, which included Johnny Cash, The Clancy Brothers, and the Chad Mitchell Trio. Then, of course, there were the Beatles, and his affinity with Brit pop has never waned. The combination of his natural inventiveness, a formal music education (classical and jazz), and many nights performing original songs to diverse audiences, has given him a keen understanding of what it takes to connect with an audience (although he still misses on occasion). On July 4, 2019, he had the opportunity to record with friends at Abbey Road Studio 2.