The song "Moça Bonita" by Penalva appears to be a simple love song with a country/sertanejo influence. The lyrics express the narrator's overwhelming infatuation with a beautiful woman who has captured their heart.

In the chorus, the repetition of "Êh êh boiada, êh êh sertão" serves as a melodic and rhythmic element, giving the song a rural and rustic feel. It also sets the backdrop for the story, suggesting that the protagonist is a cowboy or a rural dweller.

The verses repeat the theme of losing control and direction due to the intense yearning and longing for the woman they refer to as "moça bonita" (beautiful girl). The narrator describes feeling lost, confused, and even a bit crazy (perder o juízo, fico louco, alucinado) because their heart beats intensely (coração bate no peito) in the rhythm of passion (no compasso da paixão).

Overall, "Moça Bonita" portrays the intense and consuming emotions that love can bring, particularly when one becomes enamored with someone who has a powerful and captivating presence.