We're going to take the submarine DUN DUN DUNNNN
that part was so silly.

I think it is "Goin' Home" by Dan Auerbach. Thats the one that is played while Coach Taylor is driving around with the Big Cat Classic trophy.

Damn you, Tim Riggins,
for making me cry!

They should make a Spin-off
with Coach Taylor and Tami. 13 episodes of them just talking.
I would be happy.