Kathleen G. "Kay" Twomey (April 27, 1914 – September 26, 1995) was a prominent American songwriter and music arranger born in Boston, Massachusetts. Twomey was renowned for her contributions to popular music in the mid-20th century. She co-wrote "Serenade of the Bells," which achieved significant success by reaching the Billboard magazine Best Seller chart in 1947, peaking at #3 and maintaining a presence on the chart for 16 weeks. Another notable work was "Wooden Heart," famously featured in the 1960 Elvis Presley film "G.I. Blues." This song was later covered by Joe Dowell, whose version topped the US charts in August 1961 and held the number one spot on the Easy Listening chart for three weeks.

In addition to these hits, Twomey co-wrote the 1961 Elvis Presley single "Put the Blame on Me" and other songs like "Lend Me Your Comb" and "In the Beginning." Her work was recorded by a variety of artists, including Jo Stafford, Doris Day, Carl Smith, Don Cornell, Jill Corey, Eddy Arnold, Eartha Kitt, Caterina Valente, Guy Mitchell, Johnnie Ray, Brian Hyland, Gus Backus, Ray Ellis, Perry Como, Hayley Mills, Earl Grant, The Sandpipers, the Eli Radish Band, Frank Sinatra, The Statler Brothers, Leroy Van Dyke, Lucille Starr, Girl Trouble, The Beatles, Daniel O'Donnell, Barbara Lynn, David Houston, and the Nat King Cole Trio. Twomey's contributions to music left a lasting impact, and she remains celebrated for her work in songwriting and music arrangement. She passed away in Wellesley, Massachusetts.