Singer-songwriter Eric Carmen, best known as the frontman for power pop band the Raspberries, as well as the singer of the 1975 hit “All by Myself,” died over the past weekend, his family revealed on March 11. He was 74 years old. Carmen’s family shared the news on the singer’s website, posting: “It is with tremendous sadness that we share the heartbreaking news of the passing of Eric Carmen. Our sweet, loving and talented Eric passed away in his sleep, over the weekend. It brought him great joy to know that, for decades, his music touched so many and will be his lasting legacy. Please respect…