"Mr. P.C." from John Coltrane's 1959 Giant Steps album is a hard-driving minor blues dedicated to bassist Paul Chambers, a fitting tribute given Chambers's essential role in Coltrane's music during this period. Coltrane's sixteen-chorus tenor saxophone solo at 259 BPM over the 12-bar form in C minor is a relentless display of improvisational stamina and invention, his lines cascading through the minor blues changes with an intensity that borders on the ferocious. Tommy Flanagan follows with nine choruses of piano that maintain the performance's high energy level, his bebop facility fully engaged by the driving tempo. The composition has become one of the most frequently performed minor blues in jazz, its memorable head and challenging tempo making it a standard test piece for aspiring musicians. Coltrane's extended solo demonstrates his approach to building long-form improvisations, using motivic development, rhythmic variation, and harmonic substitution to sustain interest across sixteen choruses without repeating himself. The dedication to Chambers acknowledges the bassist's irreplaceable contribution to the classic quartet sound that made this music possible.