Stars including Leona Lewis and Diane Warren have paid tribute to music mogul Stephen Ferrera following his death on Monday (28Jan14). Ferrera, who headed up the A&R department at Columbia Records, passed away at his home in New York after a battle with lung cancer. He worked at some of the music industry's biggest labels during his career, including the RCA Music Group, Island Def Jam and Columbia Records, and helped guide a number of stars to fame, including American Idol alum Kelly Clarkson and Carrie Underwood, while he also worked with music veterans including Rod Stewart and Bon Jovi. British singer Lewis, who also worked with Ferrera, posted a heartfelt tribute on her Twitter.com page, writing, "Such sad news today.I'll forever remember one of the loveliest A&Rs I've had the pleasure of working with Steve Ferrera, you will be missed," while singer/songwriter Warren adds, "Very sorry to hear of the passing of Steve Ferrera, a good A+R man and a good man. Prayers to his family and friends. Too young too soon." Celebrated producer Dr. Luke adds, "RIP Steve Ferrera... he really helped me in the beginning... (Clarkson's hit track) Since U Been Gone and many others wouldn't have happened without him."