Stevens first achieved fame singing for a band called
Wicked Witch. However, after Savatage co-founder
Jon Oliva stepped down from the fore of the band at the conclusion of their tour in support of
Streets: A Rock Opera in 1992 to concentrate on other projects, namely his other band
Doctor Butcher and a
Broadway-bound musical entitled
Romanov, Savatage required a replacement. Oliva hand-picked his replacement, who was discovered and introduced to the band by Criss Oliva's best friend and guitar technician Savatage's lead guitarist, and their long-time producer
Paul O'Neill heard demos of Stevens and wanted him to sing for the band. After an initial audition, Stevens was considered to be the right man for the job and joined Savatage in 1993. He first appeared on the album
Edge of Thorns. Stevens's vocals were considered to be a departure from that of Jon Oliva, and some Savatage fans prefer to distinguish between the Jon Oliva lead albums and those with Stevens on lead vocals. The album
Dead Winter Dead contains lead vocals from both Oliva and Stevens and contains the song "Christmas Eve (Sarajevo 12/24)", which gave rise to and became a hit for the
Trans-Siberian Orchestra. In 1996, Stevens appeared along with other Savatage members in the Trans-Siberian Orchestra project. His last album recorded with Savatage was
The Wake of Magellan (1997), which some fans consider to be Savatage's best work in the post-1993 Savatage canon. In 2000, Stevens quit Savatage, citing that he wanted to spend more time with his young family. During the winter of 2001, Zak started his comeback. His Savatage connections remained evident, as
Jon Oliva produced the first Circle II Circle album,
Watching in Silence, and guitarist
Chris Caffery recorded guitar on some songs. Oliva and Caffery also co-wrote several of the songs on
Watching in Silence. In 2003, Stevens's band left Circle II Circle to join Jon Oliva's band Pain. Stevens then hired an all-new band. Circle II Circle has released three additional full-length albums since, 2005's
The Middle of Nowhere,
Burden of Truth in 2006, and
Delusions of Grandeur in 2008. In April 2014 "Ancient Rites of the Moon", the first album of the Stardust Reverie Project (Graham Bonnet, Lynn Meredith, Bill Hudson and Melissa Ferlaak), was released. "Mighty Roar" becomes one of Stevens' most impressive songs to date. During several gigs with Circle II Circle, not only were certain Savatage songs played but also entire albums featuring Stevens, among them
The Wake of Magellan and
Edge of Thorns. On July 30, 2015, Savatage reunited to perform at the first ever two-stage show at
Wacken Open Air festival, and Stevens would perform with
Savatage as well as
Trans-Siberian Orchestra. After this, he was invited to sing with TSO on stage for their Winter 2015 tour. In November 2015, Zak appeared as the host on the second Stardust Reverie project album
Proclamation of Shadows. ==Discography==