Q: what is the voicing of the first 'oldies' chord in this clip? https://instaud.io/vqE
A: OL = bass C, melody very strongly high Eb. harmonizing in the middle we have Ab, Eb, and i think very likely and subtlely there is a E note. also Bb underneath that. (so that makes it C+7#9). and for DIES, i am hearing more of a straight C7, including E, and G. (and still Bb) and i also am feeling the presence still of Eb (or maybe even Db) dirtying it up just a bit, which would mean either C7#9 or C7b9, but the presence of that note is extremely subtle (as well it should be) and might possibly just be the reverb ringing over from the previous chord.  so OL is Caug7#9 and 'dies' is C7 with possible very subtle #9. the melody and bass notes are much stronger than the harmony notes, as they should be