Performing rights org BMI held its 59th annual Pop Music Awards at the Beverly Wilshire Hotel on Tuesday night, with Lady Gaga, Jason Derulo and J.R. Rotem splitting honors for songwriter of the year.The three artists each boasted four songs on BMI’s 50 most performed songs of the year list — Gaga as a solo artist, Derulo and Rotem as collaborators on hits for Derulo and Iyaz. Country trio Lady Antebellum’s multiple Grammy-winning hit “Need You Now” was named pop song of the year, with awards going to writers Dave Heywood and Charles Kelley. Sony/ATV Songs was honored as pop publisher of the year. As previously announced, veteran songwriter-producer David Foster was named a BMI Icon. A 15-time Grammy winner and three-time BMI pop songwriter of the year, Foster has written and produced for Whitney Houston, Celine Dion, Barbra Streisand, Michael Buble, Chicago and many others.