In no particular order

Vivaldi especially Domine Deus, Rex Coelestis, RV 595, & Dixit Dominus, in D- 07
JS Bach, e.g. Concerto in G minor for 2 Cellos, Strings, and Continuo: II. Largo - there's a beautiful interpretation of this by Bobby McFerrin, & Thijs van Leer performing Erbarme Dich [from St. Matthew Passion],
The Pogues,
Louis Armstrong e.g. Lazy River, Muskrat Ramble, Black and Blue, - the list is endless
Almost all of Leftfield's tracks starting with Release the Pressure & Open Up collaboration with John Lydon aka Johnny Rotten on their first album Leftism in 1997, right up to the last track on their last album
Dawda Jobarteh,
Sileas, e.g. The Little Cascade
Derek Bell,
The Chieftains,
All of O'Carolan's music especially Michael O'Connor (aka Michael Ward) and Mrs Judge,
Lévon Minassian: I Am Dying in the Wind of My Plains,
Max Bruch: Adagio Appassionato for violin & orchestra, Op 57
Archie Roach
Fats Waller especially Twelfth Street Rag
Gnarls Barkley: Crazy

Ok, somebody stop me.

Did I mention Leftfield? :-D