Complex sentence: The remastered version was released on February 26th (UK) and March 20th (US), 2007 as part of the Sony/BMG Music Epic/Legacy series including an extra 21 minutes of music, considerably lengthening what was the shortest ELO album.
Split into simpler sentences: The remastered version of the album was released on February 26th (UK) and March 20th (US), 2007 as part of the Sony/BMG Music Epic/Legacy series. It includes an extra 21 minutes of music, considerably lengthening what had been the shortest ELO album.