Im Alter von 6 Jahren Musikschule für Trompete, dann Schlagzeug Mit 18 zur Militärmusik NÖ. Diverse Coverbands 1985-1991 Studium am Konservatorium der Stadt Wien (Jazz bei Prof. Grassmann)

1986-1996 Drummer bei der Wolfgang Lindner Band, ORF – Big Band, Wiener Opernball Orchester, Vienna Festival Orchester, Al Martino (USA), Udo Jürgens, H. Hinterseer, Klostertaler, Schürzenjäger, Festspiele Mörbisch ( Sissy & Romy ), Melanie Holiday, Jazz Four Fun, Special Blend, Vicky Thomas (USA), Trenkwalder, Bonneville – Bluesband, Pn8 ( Pop nach 8 ), aktuelles Projekt: „bay6“, techno-, hip-hop, drum&bass. Tourneen durch Canada, Japan, Australia, USA, Europa ....

Zwischen 1985 und 2010 ca. 100 Studioproduktionen und ca. 220 Radio- und TV Shows eingespielt.

Das sagen andere Drummer über Werner Groisz:

Mark Schulman (Velvet Revolver, Cher, Billy Idol, Stevie Nicks, Dave Koz, Foreigner, Simple Minds, Destiny`s Child, Pink,...):
Werner is a pro! He is kind; and he communicates well with words and especially through his drums! He made my time in Austria much more fun and interesting!

Bruce Becker (Suzanne Somers, Beach Boy Family and Friends, Andy Sheppard, Deborah Henson-Conant, David Becker, Joe DiOrio, Herb Ellis, Barbara Dennerlein, Suns of the Dead, and Frank Gambale...):
I have known Werner Groisz since 1997....He is one of the most dedicated drummers I have met. His versatility and knowledge are quite impressive. Werner is a Complete drummer.

Steve Smith (Vital Information, Steps Ahead, Mariah Carey, Bryan Adams, Zucchero, Claudio Baglioni, Tommy Shaw/Jack Blades, Ray Price, and Savage Garden, Jean Luc Ponty, Allan Holdsworth, Journey,...):
Werner Groisz is a strong player on the European scene. I had a great time during my clinic for him. In fact, Werner and I played a snare drum duet that was smokin´!!!