7th Anniversary Best is the fourth best album of dream, and one of two retrospective albums released to celebrate their 7th anniversary. The album contains all of dream's A-sides and lead album songs, plus one new track, "Dreaming Way", with lyrics by former member Matsumuro Mai. The first disc contains 14 songs sung by the original three-member lineup, the second, 12 songs by dream's 8/7-member line-ups.
It was released on January 1, 2007 in three versions: a regular 2CD edition (first press bonus: 1 of 8 stickers), a regular 2CD+DVD edition (first press bonus: 1 of 8 trading cards), and a limited edition (5,000 copies) consisting of the 2CD+DVD set, plus a special photobook signed by one of the group's members. The limited edition comes housed in a special slipcase. The DVD contains 19 of the group's music videos. Those who ordered the album from mu-mo got a New Years postcard.