The song "Na Água Negra da Lagoa" by Toquinho is a nostalgic and romantic ode to the singer's time spent in Bahia with his girlfriend Joana. The lyrics evoke fond memories of the black waters of the lagoon, the blue sea, the white sand, and the mysteries of the ocean goddess Iemanjá. The song also mentions the clear moon and moments of love shared by the couple in this beautiful setting, as well as the singing of fishermen casting their nets. The overall feeling of the song is one of longing and reminiscence for a past love and a special time spent in a magical place.