A challenge room? I guess...but these songs from the loopy experimental edge of 60s psych rock are almost adorably tame, like the Fisher-Price version of a drug trip. Ultimate Spinach outdoes Jim Morrison in faux-profundity, and The Zodiac is literal astrology in song. It’s all quite stupid and fun, when it’s not completely spellbinding, like the heart-pumping thriller “Oscillations” or “Caledonia”’s death wail.