It contains the product of two different sessions. The first date, which is actually the second chronologically, yielded just two tracks. Although, something new for the time, they were long enough to fill up one side of an LP. 5 Stars AllMusic: "The undeniable strength and conviction present in Miles Davis' performance on Walkin', underscores the urgency and passion with which he would rightfully reclaim his status as a primary architect of bop. Davis is supported by his all-stars, consisting of his primary rhythm section: Horace Silver
(piano), Percy Heath (bass), and Kenny Clarke (drums). Walkin! is a thoroughly solid effort." 'I'll Remember April' from the same session, but not included on the original LP, has been added as a bonus.