BSW, ByeAlex és a Slepp is a Hungarian musical project led by singer-songwriter ByeAlex (Alex Márta), combining indie pop, folk and electronic elements; it emerged in the 2010s following ByeAlex's rise to prominence after representing Hungary at the Eurovision Song Contest in 2013. The music typically features minimalist arrangements, introspective vocals in Hungarian and English, and a blend of acoustic instrumentation with subtle electronic production, reflecting a singer-songwriter ethos with contemporary indie sensibilities. The project has been active intermittently since the 2010s and is noted for understated, lyrically driven songs and collaborations with a rotating group of musicians.