3 Doors Down is an American rock band formed in 1996 in Mississippi. They gained fame with their debut album "The Better Life" in 2000, which featured the hit single "Kryptonite". The band's music is often characterized as post-grunge and alternative rock, with influences from southern rock and hard rock. Over the years, 3 Doors Down has released several successful albums and singles, achieving commercial success and receiving various awards. The band has gone through some lineup changes, but their sound and style have remained consistent. They are known for their catchy hooks, melodic rock sound, and introspective lyrics. With their powerful live performances, 3 Doors Down has established a loyal fanbase worldwide.