What makes Pyramid Song by Radiohead notable?

'Pyramid Song' received widespread critical acclaim, often cited for its unique time signature and orchestral arrangement. The song reached number 4 on the UK Singles Chart and solidified Radiohead's status as a leading force in the art rock movement of the early 2000s. Released on May 29, 2001, 'Pyramid Song' came during Radiohead's transition into more experimental territory following their critically acclaimed album 'Kid A.' At this point in their career, they were firmly established as innovators in alternative rock, continually pushing the boundaries of their sound and exploring complex themes.