With an ascending career and a hot live album, Humble Pie were on fire by the beginning of 1972, when the band hit London’s Olympic Studios to record its fifth studio set. And that’s when things started smokin’. Smokin’, which came on the heels of 1971’s hit Performance Rockin’ the Fillmore, would be the album that pushed the British group well into star status. It reached No. 6 on the Billboard 200 and gave the band a signature song with “30 Days in the Hole.” It vaulted the quartet to arena headliners, and even when the group did open — such as for Alice Cooper at Pittsburgh’s Three Rivers S…