Manuel de Falla - Homenaje.
YMBJ (that's you must be joking) or I could say YMBFJ!
Amazing piece. Although it 'works' on guitar, it's worth listening to piano version as Falla wrote it originally for piano. Adapted by Segovia. The history of the score is interesting (Segovia lost the original, Llobet produced a version - overly floral, too many harmonics etc, Bream seems to rely more on the piano score).
The piece obviously includes both a Spanish nationalistic feel (refer festival at which it was initially played and the ideas of Spanish composers at that time) and the heavy influence of Debussy. Torroba (Suite Castellana 1925) and others follow in similar vein.
Bream says that Britten heard him play Homenaje and he really liked it, perhaps helping to convince him to write Noctural. Britten is said to have commented that Homenaje is 4 minutes long but contains 20 minutes of music.
A Very Important Piece of Music.