Along with "Eight Miles High", Echard highlights the Beatles' "Revolver" album among the "landmark" raga rock music issued in 1966. Released in August, it included "Love You To", written by Harrison especially for sitar and tabla interplay, and "Tomorrow Never Knows", which featured heavy tambura drone, tape loops and psychedelic instrumentation. The album represented pop music's most overt incorporation of Indian instruments, musical form and philosophy up to that point, with the influence also evident in the use of vocal melisma and in the Indian-inspired guitar solos on "Taxman" and "I'm Only Sleeping". That same month, the Paul Butterfield Blues Band released the album "East-West", the title track of which (originally titled "The Raga") had evolved from their live performances since February. Led by guitarist Mike Bloomfield, the 13-minute instrumental fully explored the modal improvisation introduced by McGuinn on "Eight Miles High". Bloomfield likened the Indian drone to "the sound a bee makes: a steady hum" and said that while the pattern was essentially simple, the "challenge" was in "improvis a free melody around the one basic drone". In Lavezzoli's view, Bloomfield's playing on "East-West" "opened the door to unlimited freedom of expression for all rock guitarists, from Eric Clapton and Jerry Garcia to Duane Allman and Jimi Hendrix".