"Season After Season" is a song from "The Lady." It plays at the end of the episode, when Richard (Samantha), Marvin (Violet), the Gray Construction Man (Angela), and Maria resume their enjoyed activities.
You've been a pal to me for so long now
Season after season, you kept going somehow
And I know
You'll always be on cable—
Gumball: [Spoken] Eh, whatever floats your boat.
And when you're needin' a helpin' hand—