News of former Boston drummer Sib Hashian's sudden passing has prompted an outpouring of social media tributes among the classic rock community — and one particularly poignant post from actor Dwayne "The Rock" Johnson, who called Hashian his "second dad."

"Don't know why things have to happen the way they do sometimes," wrote Johnson in an Instagram post sharing a photo of himself alongside Hashian and members of the family they've shared throughout Johnson's long relationship with Hashian's daughter Lauren. Lamenting the departures of loved ones who leave "suddenly without having a chance to say goodbye," Johnson waxed philosophical, musing that "perhaps the lesson here is the reminder to live our lives as full and as present as we possibly can, because we just never know what's around the corner."

Rest In Peace & Love to my second dad Sib Hashian. Don't know why things have to happen the way they do sometimes. When loved ones leave us so suddenly without having a chance to say goodbye. Perhaps the lesson here is the reminder to live our lives as full and as present as we possibly can, because we just never know what's around the corner. What a full and exciting life this man lived. What an amazing family he created, loved, watched over and protected. Being on stage, in front of adoring fans, friends and family. Keeping the beat one last time. Your passing in this manner is extremely poetic and somehow beautiful. Thank you for the many life lessons you've taught over the years. Grateful. We love you Sib. We miss you. Yhmwitcoltroml. "Hasan burgers" for everyone in heaven.

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Hashian's death, which occurred while he was sailing with the Legends of Rock cruise, also triggered an outpouring of stunned remembrances from a number of his peers. Aerosmith bassist Tom Hamilton — an artist, like Hashian, with strong roots in the Boston musical community — shared his sorrow, praising the deceased as a "really good guy and fine drummer as well." Ex-Foreigner singer Lou Gramm, who'd been booked on the cruise, shared his own condolences, sending "thoughts & prayers" to his family.

Hashian's ex-bandmate Barry Goudreau expressed his own grief with fans and followers, writing, "Sib was in a million, never to be replaced. He will be greatly missed." Fellow former Boston vet Michael Sweet served with the group well after Hashian left the lineup, and although Sweet admitted he'd never gotten the opportunity to perform with him, he sent his own well wishes to Hashian's survivors, praising his "incredible contribution to my musical journey and to the history of rock and roll."

Hashian's passing was also commemorated by the official Boston social media feed, which shared a photo of Hashian behind the drums during his time with the group.

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