He was found dead at his home in Groton, Massachusetts after police officers attended for a well-being check and discovered him unresponsive.
Sources told the local outlet that he was pronounced dead at the scene and that there was no foul play suspected. The band followed up the success with "Freeze-Frame", the title track to its 1981 album, which peaked at No. 4.
The group recorded 11 studio albums before breaking up in 1985. Their 1970s hits included covers of "First I Look at the Purse" and "Lookin' for a Love" and original tunes "Give it to Me" "Must of Got Lost".
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As the group prepared to record a followup album, Wolf left the band, beginning its unravelling.
Following reports of Geils' death, fans and fellow musicians alike have been taking to social media to express their condolences. Tensions within the band led them to break up several years later, but they reformed several times in the intervening years, most recently supporting the likes of Bon Jovi and Bob Seger several years back.
Geils continued to play for the next 30 years, usually with some combination of his former bandmates.
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The J Geils Band was sometimes compared to another MA band, Aerosmith, but did not have the same staying power.
"Give It To Me" (from Bloodshot, 1973) - Like the Beatles, the Stones and the Who, the J. Geils Band eventually transitioned from being an incredible cover band to writing their own song; this was an early hit penned by the band's songwriting team of singer Peter Wolf and keyboardist Seth Justman; the song hit #30 on the pop charts.
Although the J. Geils Band was a popular touring combo from the late Sixties through the Seventies, they didn't make it big until the early Eighties, when they struck gold with "Love Stinks", "Centerfold" and "Freeze-Frame".
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But one would expect now is the time to start forcing other Senators players, and more specifically their D-men, to beat you. The Bruins anticipated a push back from the Senators, but were disappointed at letting the two-goal lead slip away.
The band toured constantly in the '70s and shared the stage with a who's who of the day's rock acts. Additionally, in the 2000s, Geils put out a pair of albums with the group New Guitar Summit as well as solo LPs under his own name. "R.I.P Jay Geils". Both live albums - "Live" Full House and "Blow Your Face Out" - are considered timeless rock-blues classics that captured the band at the height of their craziest.