Professional ratings
Review scores
Source	Rating
AllMusic	Volume One
AllMusic	Volume Two
AllMusic	Volumes One & Two
BBC	(favourable)
Consequence of Sound
The Daily Telegraph
One Thirty BPM	100%
Pitchfork Media	9.2/10

Mono Masters

Compilation album by The Beatles
Released	9 September 2009 (as part of The Beatles in Mono boxed set)
Genre	Rock
Length	99:02
Language	English, German ("Komm, Gib Mir Deine Hand" and "Sie Liebt Dich")
Label	Parlophone, Capitol, Apple
Producer	George Martin

Past Masters is a two-disc compilation album set by the Beatles, released in 1988 as part of the first issue of the band's entire catalogue on compact disc. Compiled by the noted Beatles historian Mark Lewisohn, this collection of many of the band's biggest hits as well as rarities includes every song released commercially by the band that was not available on the Beatles’ 12 original UK albums or the Magical Mystery Tour LP.

The majority of the Past Masters set consists of A- and B-sides from the band's singles, including single versions of songs that appeared in a different form on the band's albums. Also included are the full contents of the UK-only Long Tall Sally EP, two German-language tracks, a song recorded for the American market and a track released on a charity compilation album.

Past Masters was originally issued as two separate CDs Past Masters, Volume One and Past Masters, Volume Two, on 7 March 1988. The two volumes were included in The Beatles Box Set. A double LP set, titled Past Masters, Volumes One & Two (also titled simply Past Masters), was subsequently released in the US on 24 October 1988 and in the UK on 10 November 1988.

The double set was re-released on CD, titled simply Past Masters, on 9 September 2009, as part of the remastering of the original Beatles catalogue, and was included in The Beatles stereo box set. This release includes stereo mixes of both "From Me to You" and "Thank You Girl", whereas the original 1988 issue contained the two tracks in mono. The The Beatles in Mono box set, released at the same time, includes the album Mono Masters, which contains a similar track list of dedicated mono mixes.

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Wikipedia