Delerium became known due to the success of British progressive rock band Porcupine Tree - whom Allen discovered and then managed up until 2004 - but Delerium also released numerous recordings by many other artists, including Ozric Tentacles, Kava Kava, Mandragora, Sons of Selina, Moom, Sadaar Bazaar, and Omnia Opera. The double CD label sampler, "Pick and Mix", was one of the first budget CD samplers and sold over 15,000 copies. Other compilations included the non psychedelic CD "No Compromize" released in aid of the Campaign for Free Education featuring artists including Dreadzone, Zion Train, Kava Kava, Utah Saints, Eat Static, Suede, Chumbawamba and The Wedding Present.