In 1930 he became director of music on KNX in Los Angeles, California, and on CBS,[1] where he created music for such radio shows as Hawk Durango,[2]: 147  The General Electric Theater,[2]: 128  Frontier Gentleman,[2]: 126  December Bride,[2] Young Love,[3] Your Home Front Reporter,[4] The Screen Guild Theater,[5] The Whistler, Suspense, Meet Corliss Archer, My Favorite Husband, Broadway Is My Beat, and Our Miss Brooks.

Additionally, he was the musical director for CBS Radio's Broadway Is My Beat (1949–54), Mayor of the Town[6] and Luke Slaughter of Tombstone (1958).

His most lasting on-screen television credit was for composing some of the music and conducting the Desi Arnaz Orchestra on I Love Lucy.

In 1970, after Hatch had died, Marl Young (1917–2009) became the resident music composer for Lucille Ball Productions, Inc. (including the Here's Lucy series until it finished in 1974).

In 1922, Hatch graduated from the University of Chicago with a degree in chemical engineering and with High Honors and a Phi Beta Kappa Key.