The Cdemo "Eclectic" received good reviews and the band immediately focussed all their attention on a full length album. In February and March of 2003 Ulysses recorded "Symbioses". For the distribution the band signed a worldwide distribution deal. After the release in May (2003) the album promotion kicked off and "Symbioses" received overwhelming positive reviews. Despite the enthusiasm Ulysses decided to split with lead vocalist Raymond Jansen due to artistic disagreements. Shortly after the release of the album the band was confronted with the fact that they had no frontman and had to find a good replacement singer with whom the band could promote "Symbioses". After a period of auditions the band picked out Michael Hos to be Ulysses' new front man. In this line up Ulysses performed on several stages and played on festivals like "Progpassion", "Trailerpop", "Goothstock" and other Dutch festivals. In November 2005 bass player René Schippers decided, due to personal reasons, to leave the band as soon as the band could find a replacement. Casper Kroon heard the news that Ulysses had a vacancy. After some try-outs, Casper joined the band as the new bass player.