Quantum (album)
# Quantum (album)

Quantum is the third studio album by instrumental rock/progressive metal supergroup Planet X, released in 2007 through Inside Out Music. Guitarist Allan Holdsworth was originally slated to feature on most tracks, but ended up not finishing the project. As a result, his solos remain only on "Desert Girl" and "The Thinking Stone".

## Critical reception

Professional ratings :

| Review scores ||
| - | - |
| Source | Rating |
| AllMusic | |

François Couture at AllMusic gave Quantum four stars out of five, calling it "a quantum leap above previous Planet X releases" and "a surprisingly mature album". He praised the album's stronger compositions and better diversity over previous Planet X material, and listed "Alien Hip Hop", "Matrix Gate", "Space Foam", "Kingdom of Dreams" and "Desert Girl" as highlights.

In a 2012 article by MusicRadar, Dream Theater drummer Mike Mangini ranked the album tenth in his list of most influential drum albums.

## Track listing

All music is composed by Virgil Donati, except where noted.

## Personnel

* Brett Garsed – guitar, production
* Allan Holdsworth – additional guitar solos (tracks 2, 4)
* Derek Sherinian – keyboard, production
* Virgil Donati – drums, orchestration, production
* Jimmy Johnson – bass (except tracks 5, 9)
* Rufus Philpot – bass (tracks 5, 9)
* Matt Flinker – engineering
* Jamie Black – engineering
* Steve Scanlon – mixing (except track 9), mastering
* Simon Phillips – mixing (track 9)

## Release history

| Region | Date | Label |
| - | - | - |
| Austria, Germany, Switzerland | May 18, 2007 | Inside Out |
| Rest of Europe | May 21, 2007 | Inside Out |
| North America | May 22, 2007 | Inside Out |
