Cohen uses a lilting tone for her story of fantastical events on an ordinary subway. The subway car turns into a Calypso beach party when the magical Island Lady opens her bag of surprises. Out of her sack pour waves of azure sea, delicious Caribbean food, and an entire steel drum band, to the surprise of Oscar, a boy riding the train with his mother. Instead of a mundane commute, passengers join in the celebration, dancing to the music, while palm trees sway and the inhabitants of an entire island town appear. Too soon, it ends; Oscar and his mother reach their stop. Although Oscar never sees the Island Lady again, he still sings the song he learned, keeping the party alive for his family. Greenberg's bright colors and personable illustrations invite readers to join in this extravaganza.