Canadian prog heavyweights Rush have been netting constant praise for their ongoing tour, known as "Fifty Something," featuring bassist Geddy Lee and guitarist Alex Lifeson supplemented by drummer Anika Nilles and keyboardist Loren Gold. Nilles has taken the place of deceased drum royalty Neil Peart, subject of upcoming documentary Neil Peart: No One's Disciple. A trailer for the doc has come out two weeks before the premier, and it appears that four of the world's greatest sticksmen are taking part.

Tool's Danny Carey, Red Hot Chili Peppers' Chad Smith, The Police's Stewart Copeland, and Gavin Harrison of King Crimson and Porcupine Tree are seen teaming up with Lee and Lifeson for studio performances.

The documentary, produced by the Canadian Broadcasting Corporation, will debut on September 16 at the Toronto International Film Festival. No One's Disciple is the work of Scot McFadyen and Sam Dunn, who've made another film on Rush, Beyond the Lighted Stage. Watch the trailer below.