Marillion is a progressive rock band from England. They've been around for about 20 years and were, admittably, more progressive (in the classic sense of the word) before.
People unfamiliar with the band may remember them from their hit Kayleigh some fifteen years ago. Their previous vocalist, charismatic "Fish" went solo from the band over ten years ago, and now has a solo career.
Marillion have released eleven studio albums (eight of them remastered, each with a bonus disk), a couple of compilations, one remix album and numerous live recordings, many of them fan-club/mail-order-only.