When Christina moved from LA to Texas, Christine suggested a weekly challenge to stay in touch: pick a song that fits a chosen theme. This game opened them to new perspectives on each other while deepening their own understanding of the music that shapes their lives. Each week Christina and Christine recreate the magic of their song exchange on a broader scale, deconstructing their thematic picks, providing personal anecdotes and historical insights, and sharing transformative tracks rarely spotlighted on the Billboard Hot 100.