The singing for the Wahlberg 's character was provided by Steelheart frontman Milijenko Matijevic for the Steel Dragon Songs
The singing voice for Wahlberg 's character was provided by unknown vocalist , Erik Thomas for the Steel Dragon Songs , the final number dubbed by Brian Vander Ark . Jeff Scott Soto ( of Talisman , Yngwie Malmsteen , Soul Sirkus , and Journey ) provided the voice of the singer Wahlberg 's character replaces .
Rock Star -LRB-2001 film-RRB-