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|Box set by Yes|
|Released||14 November 2006|
|Recorded||1993 - 2003|
|Producer||Yes, Trevor Rabin, Bruce Fairbairn, Tim Weidner|
Essentially Yes is a box set by progressive rock band Yes. It was released in 2006 by Eagle Records. It contains five discs, four of which are previously released studio albums; Talk, Open Your Eyes, The Ladder, and Magnification, though not in chronological order. The fifth disc is a single CD version of what was later released as the 2CD live album Live at Montreux 2003.
- Disc 1: Open Your Eyes
- Disc 2: The Ladder (includes Homeworld preview)
- Disc 3: Magnification
- Disc 4: Talk (includes 2002 bonus track)
- Disc 5: Live at Montreux 2003 (single-disc version)
- Jon Anderson: Vocals on all discs.
- Chris Squire: Bass on all discs.
- Steve Howe: Guitar on discs 1, 2, 3, and 5.
- Trevor Rabin: Guitar, backing vocals, keyboards, and string arrangements on disc 4.
- Tony Kaye: Hammond organ on disc 4.
- Rick Wakeman: Keyboards on disc 5.
- Igor Khoroshev: Keyboards on disc 2.
- Billy Sherwood: Guitar and keyboards on discs 1 and 2.
- Alan White: Drums on all discs.
- Steve Porcaro: Keyboards on disc 1 track 2.
- Larry Groupé: Orchestra conductor on disc 3.