Fleetwood Mac's 1979 double album Tusk is a sprawling, experimental work that followed the success of Rumours, characterized by Lindsey Buckingham's sparser arrangements, post-punk influences, and a mosaic of songwriting from Buckingham, Stevie Nicks and Christine McVie. Considered a commercial and critical departure, it is known for its ambitious scope, high recording cost (over $1 million), and a blend of pop-rock, psychedelia, and avant-garde elements, including the iconic title track featuring the USC Marching Band.