Mikael is on Voices, Love, Trauma and Confrontation from what i remember. This IS a 'rock opera' album, so don't expect Mike to be doing everything on those songs. He has a part, which he sings well, but its mostly quite limited.
And as i always say, start with Into The Electric Castle before THE...THE can seem pretty dull the first couple of listens. ITEC is just an amazing music adventure through sci-fi fantasy, full of bombast and an utter lack of seriousness. Ahhh, so enjoyable...
ps. Chaos does indeed kick ass. Though Journey On The Waves Of Time is really the only other song i love on that cd. I prefer The Dream Sequencer, with classics like My House On Mars, Dragon On The Sea, Temple Of The Cat and And The Druids Turn To Stone. Shit, i need to listen to that now....