Phife Dawg - Ben Dova (2000) sampled Dorothy Ashby - Canto De Ossanha (1969)

Artist:  Phife Dawg
Song:  Ben Dova
Year:  2000
Album:  Ventilation: Da LP

The lyrics to this song can only be described as brilliant ignorance.  I still recite these rhymes in my head 13 years later.

Artist:  Dorothy Ashby
Song:  Canto De Ossanha
Year:  1969
Album:  Dorothy's Harp

The harp never sounds better than when it's in the hands of this lady.  This is a great album, full of classic samples such as "Fakin Jax" by InI.  The Phife sample is located at 0:12.

M.O.P. - Rugged Neva Smoove (Premier Remix - Street) (1994) sampled Joe Zawinul - In A Silent Way (1971)

Artist:  M.O.P.
Song:  Rugged Neva Smoove (Premier Remix - Street)
Year:  1994
Album:  Rugged Neva Smoove 12-Inch Maxi Single

This is another world premier from Representative Sample.  The sample is the electric piano noise heard during the verses.

Artist:  Joe Zawinul
Song:  In A Silent Way
Year:  1971
Album:  Zawinul

I saw Joe Zawinul at the Toronto Jazz Festival back in 2003, he was nice on the keys.  When the show ended, the audience started rushing the stage to shake his hand, but since it was the height of the SARS epidemic, he got up from the piano and abrupty left.  Can't blame him.  Listen carefully, the sample is located at 1:34.