"Sin Contrato" is a song by Colombian reggaeton singer Maluma. It was released in 2016 as a single and is included in Maluma's third studio album, "Pretty Boy, Dirty Boy."

"Sin Contrato" is a reggaeton and urban pop track with a catchy and danceable rhythm. The song's upbeat and lively sound, combined with Maluma's smooth vocals, make it a popular choice for parties and dance floors.

The song was written by Kevin Mauricio Jiménez, Bryan Lezcano, Kevin Mauricio Jiménez Londoño, and Juan Luis Londoño Arias (Maluma). It was produced by Rude Boyz, a Colombian production duo known for their work in the reggaeton genre.

Lyrically, "Sin Contrato" addresses themes of love and relationships. The title "Sin Contrato" translates to "Without a Contract" in English, and the lyrics revolve around the idea of being in a romantic relationship without the need for formal commitments. The song expresses the desire to enjoy the present moment without worrying about the future.

Upon its release, "Sin Contrato" received positive reviews from music critics and became a commercial success. The song topped the charts in several countries and further solidified Maluma's position as one of the leading figures in the Latin urban music scene.

The music video for "Sin Contrato" features Maluma, along with models and dancers, in a colorful and vibrant setting. The video's lively visuals complement the song's upbeat and joyful vibe, adding to its appeal.

As one of the standout tracks from "Pretty Boy, Dirty Boy," "Sin Contrato" remains a fan favorite and continues to be a popular track in Maluma's discography. Its catchy melody, danceable rhythm, and feel-good lyrics have made it a hit among Latin music fans worldwide.