Jimmy Layne Webb (born August 15, 1946) is an American songwriter, composer, and singer. He has written numerous platinum-selling songs, including "Up, Up and Away", "By the Time I Get to Phoenix", "Wichita Lineman", "Galveston", "The Worst That Could Happen", "All I Know", and "MacArthur Park". He has had successful collaborations with The 5th Dimension, Glen Campbell, Richard Harris, and Art Garfunkel. In addition, his compositions have been performed by many popular contemporary artists, including Linda Ronstadt, The Supremes, Johnny Maestro & the Brooklyn Bridge, Rod McKuen, Frank Sinatra, Thelma Houston, The Temptations, Barbra Streisand, Joe Cocker, Judy Collins, Donna Summer, America, Amy Grant, Dionne Warwick, John Denver, Johnny Cash, James Taylor, Billy Joel, Tom Jones, Michael Feinstein, Rosemary Clooney, R.E.M., Cassandra Wilson, and Carly Simon.