As musicians and fans began to learn of the tragic loss of David Bowie early Monday morning (Jan. 11), heartfelt tributes to the legendary artist have emerged on social media.

Bowie died following an 18-month battle with cancer just two days after his 69th birthday and the release of his final album Blackstar. Fellow musicians have responded by expressing their sorrow and condolences online; sharing touching messages, favorite songs and fond memories; and articulating Ziggy Stardust’s lasting impression and influence on their careers.

Read messages from the Foo Fighters, Iggy Pop, Paul McCartney, Krist Novoselic, Courtney Love, U2 and more below:

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