Comments about this song from www.songfacts.com

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Art Garfunkel dared Paul Simon to write a song about Frank Lloyd Wright. This song was the answer to that dare.

Frank Lloyd Wright is a famous architect. Garfunkel once studied to be an architect because he thought his career as a musician would never pan out.

This song can also be interpreted as a good-bye from Paul to Art since "Bridge" was their last album together. The phrase "I remember the nights we'd harmonize till dawn, I never laughed so long, so long, so long..." The repeated use of "so long" can be interpreted as a goodbye. (thanks, Kristy - La Porte City, IA, for all above)

There's a funny line at the end that you have to listen to carefully. Art Garfunkel sings "So Long" so many times that Paul responds "So Long Already, Artie!" (thanks, Tristan - L.A., CA)

In Ayn Rand's book Fountainhead, the character Howard Roark was loosely based on Frank Lloyd Wright. (thanks, Chetan - Bangalore, India)