Jimmy Page proved once and for all his absolute mastery of the blues rock idiom with 'Since I've Been Loving You' from Led Zeppelin's third album. An anomaly for a record mostly featuring material that was a turn away from Zeppelin's trademark brand of heavy blues rock, the track, which is No. 39 on our countdown of the Top 50 Led Zeppelin Songs, was a ridiculously good juxtaposition of the group's primary influences and has long been a fan favorite.

Led by Page's simple blues guitar lines and padded by John Paul Jones' organ chords, the track features a vocal from Robert Plant that runs the gamut from practically whispering, to almost howling out the words in pain -- all topped off by one of Page's greatest-ever guitar solos.

John Bonham's drum performance also fits the track perfectly, barely sketching out the verses, but pounding home the choruses and solo sections with typical bravado.