There are different artists using the name 'Sleepwalker': 1) Atmospheric Black Metal/Post-Rock solo project of Michael Rekevics, the drummer of Fell Voices and RUIN LUST. The band has two CD-R demos, entitled simply Sleepwalker and Sleepwalker II in their most recent releases on vinyl by Vedavu Records. More information can be found in the albums' wikis (note that last.fm's tracklist for the first demo is for another band's album).

Read more about Sleepwalker on Last.fm.