It seems unlikely to be able to pick one song from the threepenny opera that stands out above the rest since the thing in itself is so honed to perfection (and never moreso than in the very early recordings). But as a microcosm of the whole this track (track 8) encapsulates perfectly the balance between the borrowed idiom of the popular musical style and the squalor of the lyrics. there is a jaunty middle section in which Mac recalls how he would slip out of bed to let one of the whore Jenny's clients in, mix them a drink and treat them well. Then comes a duet and they sing together of how they long to return to that whorehouse and to those happy times. At the end the music lingers with added, disconnected percussive sounds, in which time the ambivilance and ironies all resonate, creating a moment of perfection for the work as a whole, where all meaning vanishes and mere rhythm persuades.