after being signed to universal music polska, sarsa released her debut single "naucz mnie" (teach me) on 30 april 2015. the official music video was released two weeks later. the song peaked at number-one on the polish singles chart and stayed there for six straight weeks. from 17–18 july, she represent poland at the baltic song contest, performing "naucz mnie" and "indiana". she won the audience award.