In this series of podcasts Joe traces the evolution of song from the Middle Ages until the present. In "Something" by George Harrison we have a classic song covered by many artists, most notably Frank Sinatra who called it "the greatest love song of the past 50 years".
The song, and equally important, George's solo - called by many his greatest - I believe had a strong influence on the evolution of guitar soloing in the rock idiom. Also highlighted is the use of melodic, rhythmic and harmonic motives as well as modulations, secondary dominants and variations in form.