“My parents played his albums endlessly in the 1970s. I can close my eyes and hear all his hits right now. #RIP to this often underappreciated musical genius,” one fan tweeted.

“Sad entertainment news: The music world has lost a brilliant songwriter and entertainer. RIP Neil Sedaka,” another one added.

“🎶 Breaking up is hard to do. RIP Neil Sedaka – so many wonderful songs and great performances, from a very happy time. Condolences to all who knew and loved him,” a third person tweeted.

Sedaka, a Brooklyn-born singer-songwriter who emerged from the famed Brill Building pop scene, built a remarkable career spanning more than six decades, leaving a lasting imprint on American music as both a performer and a prolific writer.

Over the course of his career, he earned five Grammy nominations, including one at the second-ever ceremony in 1959. His contributions to music were formally recognized when he was inducted into the Songwriters Hall of Fame in 1983, and he received a star on the Hollywood Walk of Fame in 1978.

Sedaka’s success was not limited to his own recordings. He penned major hits for other artists, including Connie Francis’ 1958 classic “Stupid Cupid” and Captain and Tennille’s chart-topping “Love Will Keep Us Together” nearly two decades later. Even after his commercial peak, he continued to perform and record, maintaining a strong connection with audiences worldwide.

As a recording artist, Sedaka achieved three No. 1 hits on the Billboard Hot 100 and placed nine songs in the Top 10, with his biggest success coming in the early 1960s and again during a resurgence in the mid-1970s. That comeback was boosted in part by Elton John, who collaborated with him on the 1975 chart-topper “Bad Blood.”

Born on March 13, 1939, Sedaka grew up in Brighton Beach, Brooklyn. His musical abilities were evident early on; after a teacher recognized his talent, he began piano lessons and soon earned a scholarship to the Juilliard School’s Preparatory Division for Children.

Sedaka is survived by his wife, Leba Strassberg, whom he married in 1962, and their two children, Marc and Dara Sedaka.