On several occasions she won second place to later be told by the judges that she had not been awarded first place because of her choice to perform in English. By the time Otero was close to 14, her mother decided to help her create a professional demo. A local recording studio called The Time Machine, run by Ivan Nazario, a well-respected producer in Puerto Rico, was opening in town and her mother immediately contacted them to inquire about pricing. She became their first customer but was unable to record there because the studio was not finished. They set out to San Juan, Puerto Rico and recorded at the Horizon Studios to record the covers “The Rose” by Bette Midler and “You Mean The World To Me” by Toni Braxton. During her final months in high school, Otero and her mother began working on her first concert ever in which she titled Once In A Lifetime. By 1995, American music became very popular and performing in English was not that much of a struggle anymore. The concert had many local businesses, schools and friends involved allowing Melissa to perform at the Starz Theater in Yauco, Puerto Rico. They sold over 300 tickets and was deemed a “huge success” for no other independent artist had been able to accomplish such an event while performing in another language. During the summer of 2006, Melissa had released her single “My First Everything” but was struggling with depression. She did however continue writing and began her journey in writing 'My Spirit"   During the months of July 2011 and August 2011, Melissa's new promotional track "Angels and Demons" was featured on US Airways as part of the Sonicbids Indie Showcase. The track was written by Otero and produced by Stefan Moessle. Otero's song "Angels and Demons" was featured on Dance Moms during the Season 3 premier show on January 1, 2013. It was featured in the themed performance by the contestants. Otero's song "Spellbound" was featured on Abby's Ultimate Dance Competition season 2 for Kalani Hilliker and Tyler Atwood duet "the ice queen". "With You (Contigo)" was the official theme song for supporting characters Greta and Lazaro in the telenovela Reina de corazones (U.S. TV series)  "No Soy Un Angel" was the official love theme song for supporting characters Smith y el Supremo in the telenovela Reina de corazones (U.S. TV series)  In 2012 "Angels and Demons" was part of the Rock Band (video game) catalog.