David Bowie once explained "Changes" like so: "[It] started out as a parody of a nightclub song, a kind of throwaway." Which is part of the fun joy of the track -- it manages to work completely straight-faced while also having some laughs as well. For all of the lyrical references to "these children that you spit on" and "how every time I'd got it made, the taste was not so sweet," "Changes" doesn't pretend to be the voice of a generation or rampant angst gone crazy. It's upbeat, entertaining, and, but of course, has that brilliant knack of Bowie's -- an absolutely wonderful chorus. With Rick Wakeman's piano providing the introduction and conclusion for the song, not to mention helping to form said chorus, Bowie leads the incipient Spiders From Mars in a sly romp mixing semi-spoken verse and his delicious delivery of the title, "Ch-ch-ch-changes!" The descending chords of the bass hint at that particular glam rock element's incipient dominance, while Ken Scott's production and Mick Ronson's excellent string arrangement -- not to mention Bowie's own winning sax part -- complete the package.