Lulu

Lulu is a collaborative studio album by the American heavy metal band Metallica and the American avant-garde musician Lou Reed, released on October 31, 2011. The album is a combination of rock and experimental music, drawing inspiration from the plays of Frank Wedekind, particularly 'Earth Spirit' and 'Pandora's Box'. It features a mix of spoken word, heavy guitar riffs, and orchestral arrangements, showcasing a unique and ambitious crossover of styles. The album received mixed reviews from critics, with some praising its boldness and others criticizing its length and complexity. Despite its polarizing nature, 'Lulu' has garnered a cult following and is noted for its artistic experimentation and the collaboration between Metallica and Reed.