Best first track

A lot of good suggestions, but I swear I don't know how anything could top "Gimme Shelter."

1st Queen album - 'Keep Yourself Alive'

Hells Bells prob the all time classic same as Queen live magic etc.

Mozart Symphony 40 always does it for me as well- soon as that needle drops

Jazz has plenty of examples:

Rollins-Saxophone Colossus: "St. Thomas"

Coleman-Shape of Jazz to Come: "Lonely Woman"

Coltrane-Love Supreme: "Part 1"

Brahem, Anour-Thimar: "Badra"

For classical, it is hard to pick favorite opening movements or single movement works, but the following come to mind:

Shostakovich-Piano Trio No. 2

Beethoven-Violin and Piano Sonata No. 5 ("Spring")

Mozart-Vesperae Solennes Confessore

Adams-Violin Concerto

Couple more:

John-Madman Across the Water: Tiny Dancer

Johnny Nash-I Can See Clearly Now: I Can See Clearly Now