the recording of his first album), a Fuzz Face distortion box, and a wah-wah pedal. One mixture of them produces a "whistling, shimmering, ring-modulated tone so rich with upper harmonics" in the higher range, while in the lower range "it almost sounds like 'Froggy Went a-Courtin'' ... all these [lower] oct[ave]-intervals give it such a dramatic effect". His use of the wah-wah employs "rapid foot movement and wide sweeps [which] tend to make the melody fade in and out". Also, by using a triplet rhythm with the pedal, a polyrhythm with the prevailing 4/4 beat is created. The lyrics, some which borrow from other R&B songs, are also improvised and show considerable differences between the two renditions. As it unfolds, there is an R&B-style vocal call and response section between Hendrix and Miles, then separate vocal sections for each, which Miles follows with scat singing. During the middle section, most of the instrumentation drops out and returns with more Hendrix guitar tonal explorations before winding down at 8:23 (second show) and 9:32 (third show). While McDermott feels that the jam is underdeveloped and biographer Harry Shapiro criticizes Miles' vocals, Shadwick and writer David Henderson focus on the "easy groove" and "lilting flow". Besides adding a fresh rhythmic element to his music, it also gives Hendrix more room to experiment with different approaches and sounds on guitar. Similarly, the Buddy Miles song "We Gotta Live Together" is a jam piece. It forms the second part of a medley with "Voodoo Child (Slight Return)" and had only been performed once before at the Baggy's rehearsal room. The song features Miles attempting to engage the audience in a call and response "testifying" soul music-style vocal section, which was mostly edited out for the album release. Hendrix and Cox back Miles' vocal sections with parallel funk-style lines, before a guitar solo using Hendrix's new combination of effects. Shapiro comments "Changes" is another song written and sung by Miles and it benefits from more development and structure. Although it includes a prominent guitar line by Hendrix, it is Miles' showcase piece. The song was performed during each show with little variation, except for Miles' vocal improvisations. With these sections edited out, "Changes" is a relatively concise, soul music radio-friendly track. When Miles re-recorded it as "Them Changes", it became a Billboard top 40 Best Selling Soul Singles as well as appearing in the magazine's Hot