Chad Smith, Taylor Hawkins, Robert Trujillo jammed with Post Malone & Andrew WattTue, October 27, 2020 by ABC NewsSHARE NOW Chad Smith & Andrew Watt 2015; Dimitrios Kambouris/Getty Images for John VarvatosHomeMusicRockChad Smith, Taylor Hawkins, Robert Trujillo jammed with Post Malone & Andrew WattA few rock heavyweights stopped by producer Andrew Watt‘s 30th birthday party over the weekend.According to Watt’s Instagram, the celebration included an all-star jam sessions including Foo Fighters‘ Taylor Hawkins, Red Hot Chili Peppers‘ Chad Smith, Metallica‘s Robert Trujillo and Jane’s Addiction‘s Chris Chaney, as well as Post Malone.“DIRTY 30…best jam of all time,” Watt wrote in a caption accompanying photos of the festivities.Watt co-produced and played guitar on Ozzy Osbourne‘s new album, Ordinary Man, which also featured Smith on drums and Duff McKagan of Guns N’ Roses on bass.By Josh JohnsonCopyright © 2020, ABC Audio. All rights reserved.