Martin is just the most successful of a small “club” of eight professional songwriters who have been the principal or sole writers of thousands of Billboard hits, including over 100 #1s. The others are Tor Erik Hermansen and Mikkel Storleer Eriksen (two Swedes who work as a team), Ester Dean, Bonnie McKee, Lukasz Gottwald, Karl Johan Schuster, and Benjamin Levin.
