It’s Shatner Claus! Star Trek actor boldly goes into another strange new world: holiday music

• William Shatner gets help on album from Iggy Pop, Judy Collins, Brad Paisley, Jethro Tull’s Ian Anderson, ZZ Top’s Billy Gibbons and Rick Wakeman
• ‘Every song has my interpretation,’ says 87-year-old, who’s been applying his hyper-dramatic style to albums for 50 years, even though he ‘can’t sustain a note’