Mumford & Sons is a British-American rock band formed in 2007, known for blending folk, indie rock, and alternative music with energetic live performances and heartfelt lyrics. Led by frontman Marcus Mumford, the band achieved international success with hit albums including "Sigh No More" and "Babel," establishing themselves as one of the defining acts of the 2010s indie folk movement. Their dynamic sound and emotional depth have earned them multiple Grammy Awards and a devoted global fanbase.