Vocalist Ian Gillan, together with Robert Plant, Ozzy Osbourne and a few others, is considered one of the legendary voices that shaped hard rock. Despite his commitment to Deep Purple, the singer has built an impressive solo career. “Contractual Obligation” is a collection of performances during a recent tour through Eastern Europe, which contains three shows which will be released on different formats via earMUSIC on July 26, 2019: Still fresh from the success of the studio album “NOW What?!”, and just a few months before the release of the latest and equally successful album “inFinite”, Ian Gillan accepted the offer to tour for a month in Eastern Europe with a full rock show, accompanied every night by a different local orchestra.