大放悲声

大 = 一 + 人 : The big (大), huge (大) robot (mnemonic symbol for 大) is working out in the ashram's bathroom (a4). He's lifting a flute (一) to which Don Quixote (d) and Neanderthal man (人) are clinging.

放 = 攵 + 方 : In the anglepod's bathroom, Frankenstein's monster crushes a square to pieces using a sledgehammer. He puts the pieces into the toilet and releases them afterwards by flushing it.

悲 = 心 + 非 : Beelzebub (b) is looking through his old negatives (非) in front of the Eiffel Tower (ei1). He is reminded of his youth and his lost loves and his heart (心) is filled with sadness and grief (悲). His heart gets so heavy that he drops it on the floor, just for a moment to get some relief.

声 = 士 + 尸 + 丨 : Sherlock Holmes (sh) hears the terrifying sound (声) of bone (丨) on stone in front of the engine ((e)ng1), and he's sure that there must be a ghost (尸). Indeed it's only the bachelor (士) who wants to scare Sherlock.