Karl Groom is a British guitarist and record producer. He is best known as a founding and the only constant member of the progressive metal band Threshold...

the quality of the production. The former noted the participation of Karl Groom and Mika Jussila (Stratovarius, Avantasia) while the latter magazine called...

metal band formed in Surrey in the late 1980s. The guitarist and producer Karl Groom has been the band's only consistent member. Threshold began their career...

backing vocals Frédéric Leclercq – bass, backing vocals Produced By Karl Groom, Herman Li & Sam Totman "DragonForce Confirm First Live Album 'Twilight...

Studios with Karl Groom engineering. The rerecording for the album in 2002 mostly took place at Thin Ice Studios in Surrey, by Karl Groom, and at Lamer...

Nolan – backing vocals Produced by Karl Groom and DragonForce Recorded and mixed at Thin Ice Studios by Karl Groom All guitars recorded at Herman Li's...

bass guitar, backing vocals Pete Morten – guitar Karl Groom and Richard West – production Karl Groom – mixing Mika Jussila – mastering Ray Van Horn, Jr...

was then mixed at Thin Ice Studios by Karl Groom, Sam Totman, Li and Vadim Pruzhanov and engineered by Karl Groom and Li. The mastering was performed by...

Groom of the Chamber, or Groom of the Privy Chamber, Groom of the Robes, Groom of the Stole, and Groom of the Stool. The English etymology for Groom comes...

drummer Johanne James, who had previously played with the band on tour. Karl Groom – guitar Johanne James – drums Jon Jeary – bass Andrew "Mac" McDermott...