Klas Krantz is a Swedish Musician and Musicologist who regularly provides Music Scores with his arrangements.
Take a look at this You Tube video in which a String Orchestra are playing one of Klas’s arrangements of Recuerdos de la Alhambra
Recuerdos de la Alhambra was originally a tremolo study for guitar, the theme was arranged by Mike Oldfield for the sound track to the film, The Killing Fields.
Take a look at this sheet music on Music-Scores.com by clicking HERE. Then if you click on ‘Similar Titles’ (left hand side of the page) you will see the different ensembles and duets available for Recuerdos de la Alhambra including String Quartet, Cello Quartet, Cello & Guitar, Flute & Guitar, Treble Recorder & Guitar etc.