In case you have trouble remembering the lyrics...
select v || case
when v=1 then ' partridge in a pear tree'
when v=2 then ' turtle doves'
when v=3 then ' french hens'
when v=4 then ' calling birds'
when v=5 then ' GO-O-OLDEN RINGS!'
when v=6 then ' swans a swimming'
when v=7 then ' geese a laying'
when v=8 then ' maids a milking'
when v=9 then ' ladies dancing'
when v=10 then ' lords a leaping'
when v=11 then ' pipers piping'
when v=12 then ' drummers drumming'
(select generate_series(generate_series(1,12), 1, -1) as v) q;
[update: now the lyrics are in the right order for day #2 and beyond...also decided to correctly spell 'pear' against my better judgement]