There are two musicians with name ZOLTAR. But the first was a Polish composer of SPACE-SYNTH/SYNTH-DANCE music (in style of KOTO/LASERDANCE).
His album "COSMIC PIRATES" has been published in 2003. His temporary site is http://zoltar.mp3.wp.pl
Zoltar the DJ, the "Brother From Another Planet" is a DJ from the U.S. Formerly program director of XM Radio's trance channel, The System. Has a weekly podcast and radio show, Subterranean, which can be downloaded ( http://zoltar.podomatic.com/ ) or heard on a number of stations, including XM-Sirius's dance channel, Area.