I'm trying to parse this and it's killing me.
To the little red bird
(So this is dedicated to the little red bird. Or we are addressing the little red bird. Or this is from the perspective of the little red bird.)
who whistles to the girl,
(
Jazz is trying to describe "bird singing melody to a woman"
but "whistles to the girl"
mostly just evokes street harassment from construction workers. Perhaps tiny red bird construction workers wearing little yellow helmets)
he sits on her shoulder,
and asks her to twirl
(
If I was taking this seriously, in a poem a red bird sitting on your shoulder asking you to do things like spin around in circles = obvious symbol of madness or the devil, but it's Jazz so this shit is just random)
In Dudley Garden where the sun blazes bright,
the footprints of its past transports
(cringe) her to new heights.
Do you ever do that thing where you can easily guess the next rhyme in a bad pop song? "blah blah blah blah blah amaze me. blah blah blah blah drive __ ______."
Lay in the spot
(So suddenly we aren't in action mode, of spinning and twirling and being transported by footprints, now we're just deadass laying down. 'Kay.)
and feel the new age.
(Oh that red bird is definitely the devil.)
Rumbling it's a coming says the wise old sage.
(These rhymes, Lord help me. 
If the "wise old sage" is telling you to repent, please listen to him. If Jazz ever met a wise old sage in his entire life he'd just end up yelling at the old man that 
love is love!!!! 
or some shit and calling him a bigot)
Don't let the fear stop your light beams from singing
(Ah, okay. Now we've fully given up on any themes, completely abandoned the original point, and are falling back on inspirational slogans. Cool. Like Sander's entire existence.)
Because the fire within keeps an eternal love a bringing.
(That's it, I'm calling in the airstrike)
