Campbell released his first solo album, "Music from a Round Tower" in 1996 (a mixture of authentic traditional instrumentation with MIDI, sampling and sequencing, plus contributions from Dave Stewart). Despite declaring in 2004 that he "personally (had) nothing to say in the western musical language" Campbell followed it up in 2009 with "Music from a Walled Garden". He has gone on to record as half of The World Wind Band (the other half being fellow multi-wind player Jan Hendrickse) and currently plays and composes as part of the "non-European folk" band Kalamus, which he has described as "mostly flute and bagpipe music with percussion" and which released their first album "Bronze" in 2011.