Deep Purple released "Portable Door" last Tuesday, the 30th, the first single from their new album, =1 .
The track marked the return of the collaboration between the band and producer Bob Ezrin and can be heard at the end of this article.
Ezrin is also credited as a composer of the song, along with Ian Gillan , Ian Paice , Roger Glover , Don Airey , and Simon McBride .
The album, scheduled for release on July 19th via earMUSIC, is now available for pre-save .
According to a press release, the title =1 ( via NME ): “symbolizes the idea that, in an increasingly complex world, everything eventually simplifies until it becomes a single, unified essence. Everything equals one.”

Deep Purple – = 1
1. Show Me
2. A Bit On The Side
3. Sharp Shooter
4. Portable Door
5. Old-Fangled Thing
6. If I Were You
7. Pictures Of You
8. I'm Saying Nothin'
9. Lazy Sod
10. Now You're Talkin'
11. No Money To Burn
12. I'll Catch You
13. Bleeding Obvious
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