The song is most likely “LEMON KING (Sell Lemons SONG)” by Scarexy.

A separate fan page for the game’s soundtrack also shows multiple track names used in Sell Lemons, including entries like “Sweet Marilyn,” “Mr Big Cha Cha,” and “Waltzing Flutes,” so the exact song can depend on which scene or clip you mean.

If you want, I can also help identify the song from a specific video clip or timestamp.