Mike Mettler

Jethro Tull made a bold move with their fourth album, March 1971's Aqualung, by amping up the intensity that informed the eclectic, prog-folk acoustic/electric hybrid the British band had firmly established on their first three LPs. That move effectively catapulted Tull headlong into the slipstream of the first wave of FM radio-favored artists. In fact, one could even argue the opening six-note pattern of the iconic title track is as instantly recognizable as the recurring four-note riff that defines Deep Purple's seminal "Smoke on the Water" (sorry, just wond'ring aloud here).

The Beatles were, for all intents and purposes, over. While new, original music would follow in May 1970 with the release of Let It Be, the balance of the recording sessions for what ultimately became September 1969's Abbey Road is generally acknowledged as the in-studio swan song for those four Liverpool moptops who forever defined, if not outright created, the popular music artform in the 1960s.

When Genesis tendered their fifth album, Selling England by the Pound, in October 1973, they finally cemented the promise that had been on display in fits and spurts on their previous LPs. (See the wide aural swath of "The Knife" from 1970's Trespass and the mind-expanding combo of "Watcher of the Skies" and "Supper's Ready" from 1972's Foxtrot as prime examples.)

And lo, there was a new breed of musician who had come to town, and they were duly christened singer/songwriters. In the wake of the burgeoning rock era's focus on volume-dealing power trios and instrumentally propelled multi-member ensembles (whether schooled or otherwise), there soon emerged another genre compelled by a more sensitive, more lyric-driven, and more acoustified approach.