Trilogy crashes open with “The Endless Enigma, Part 1,” led by Carl Palmer’s full-bodied drumming and Greg Lake’s soulful vocals. Even at its most fanciful, this album is a display of musical muscle. The rustic funk-pop of “The Sheriff” shows ELP’s tight-knit simplicity, while the acoustic ode “From the Beginning” is a soothing, mystical standout. If you’re feeling overly mellow, never worry: the trio brings its virtuosity to a boiling point with the orgasmic title track, a whirlpool of kinetic rhythms, multicoloured synths and gyrating basslines.