Los Angeles (E! Online) - The man who helped put Boston on the map has journeyed on.

Singer Brad Delp was found dead Friday in his New Hampshire home by police who were responding to a 911 call for help, made around 1:20 p.m. ET. Delp was 55. 

While the cause of Delp's death is still under investigation, according to a statement from the Atkinson Police Department, the state medical examiner's office doesn't suspect foul play and the musician looked to have been alone in his house when he died. 

"There was nothing disrupted in the house," Police Chief Philip Consentino told WMUR-TV. "He was a fairly healthy person from what we're able to ascertain."

Boston, which at the time included Delp, producer-songwriter-guitarist Tom Scholz, drummer Sib Hashian, guitarist Barry Goudreau and bassist Fran Sheehan, hit it big in 1976 with their multiplatinum self-titled debut, which featured the signature tunes "MoreThan a Feeling" and "Let Me Take You Home Tonight."

Boston, which sold more than 17 million copies, remains the number-one-selling debut album in U.S. history. 

A statement on the band's Website read, "We just lost the nicest guy in rock and roll."

Boston's sophomore record, 1978's Don't Look Back, was also a big success, selling more than 7 million copies. But due to artistic differences between Scholz and the band's label Epic—which resulted in a lengthy legal battle—their next album, Third Stage, featuring the number-one hit "Amanda," didn't drop until eight years later.

Third Stage was released on MCA Records, which bought out Boston's contract after it parted ways with Epic.  

Delp took a powder from Boston in 1991 to form Return to Zero with Goudreau, but re-teamed with his old mates in 2002 for their fifth studio album, Corporate America. Plans for a summer tour had reportedly been in the works.  

Up until his death, the Danvers, Massachusetts, navtive had also served as frontman for BeatleJuice, a Beatles tribute band. 

"BeatleJuice is really coming full circle for me. Playing those songs evokes such great memories and reaffirms my admiration for The Beatles and their superb craftsmanship. This is a tribute to my musical heroes and an admittedly self-indulgent chance for me to Get Back in touch with my childhood," Delp said earlier this month in a news release to promote a Mar. 16 show at the Rochester Opera House in Maine.  

Delp had popped the question to longtime girlfriend Pamela Sullivan over the Christmas holidays and the couple were planning to tie the knot this summer.