Whatta Man by Salt-N-Pepa (feat. EnVogue) when we get our first glimpse of Eddie Diaz. 

Rock Steady by Aretha Franklin at end when Athena is on the overpass 

Under Pressure

First song over the opening title montage.

Billy Joel

Eddie putting on a shirt and Buck thirsting over him.

Buck and the new guy in the gym working out.

Athena driving on the highway, feels the shaking and stops to see that the overpass she's on has collapsed.