 Most of their subsequent albums contain both original songs and re-interpreted classical pieces.It quickly became evident that van der Linden had assumed leadership of the group, and in a 1972 press release interview accompanying advance copies of the album "Ekseption 5" he openly said so.After 1973's "Trinity" album he was asked to leave the group by his bandmates, and in the fall of that year he formed a new group Trace, during which time he was replaced by Dutch keyboardist Hans Jansen.