In 2011, Rossinelli was chosen to represent Switzerland at the Eurovision Song Contest in Düsseldorf, Germany, with the song “In Love for a While.” This song was her debut single, and the positive, upbeat track caught the attention of Eurovision viewers. Rossinelli and her band managed to qualify for the final round of the competition, marking Switzerland’s first entry into the Eurovision finals since 2006. They ultimately finished in 25th place out of 26, but the exposure helped Rossinelli gain a larger following.
Following Eurovision, Rossinelli and her band, which includes musicians Georg Dillier and Manuel Meisel, released their debut album, “Bon Voyage,” in 2011. The album was successful in Switzerland and led to several successful follow-up albums, including “Marylou” in 2013, which reached number one on the Swiss Albums Chart, and “Marylou Two” in 2014.