Siete canciones populares españolas, by Manuel de Falla, is one of the most popular cycles of folk-songs in music history. Originally written for piano and voice, there are transcriptions for voice and guitar, cello and piano and two versions for orchestra.
De Falla himself wrote: “In all honesty, I think that in popular song, the spirit is more important than the letter. The essential features of these songs are rhythm, tonality, and melodic intervals. The people themselves prove this by their infinite variations on the purely melodic lines of the songs.”
The songs derive from different regions of Spain, maintaining their original character and appeal without ever falling into cliché. All of them deal with love and everything that comes with it, joyful or painful. As it usually happens with great composers, De Falla added his own twist to the original songs, thus making them more interesting.
You can find a detailed analysis of each of them here: