Gisel de Marco (born in Rosario, Argentina) made her first home recorded album Blue Bay already at the age of 10. She discovered her love for singing after her first performance in a karaoke bar, singing Hero by Mariah Carey. Gisel continued performing in musicals, studied hip-hop and Persian dance, was a model for Falabella, won several contests for singing and songwriting, and was lead singer in a local band, named The Spanglish Band.

In 2007 Gisel de Marco joined formerly crowdfunding website SellaBand and raised $50,000 for the recording of her debut album All The Way. After the release in 2010, Gisel moved to Switzerland, toured Europe and Asia, and performed in countries like United Kingdom, the Netherlands, Austria, Switzerland and Russia.

In 2013 Gisel de Marco joined The Voice of Switzerland, became one of the 12 best singers, and got because of that a lot of attention from the Swiss audience and media. Later that year Gisel submitted two songs for the Swiss selections of the Eurovision Song Contest and made it to the national finals.