Guitar,Instrumental Duet,Viola - Level 4 - Digital Download SKU: A0.532581 Composed by Isaac Albeniz. Arranged by Klas Krantz. Classical,Romantic Period. 13 pages. Amadeus Music #6497587. Published by Amadeus Music (A0.532581). Isaac Albéniz (1860-1909) was a Spanish pianist and composer, best known for his piano works based on folk music idioms, many of which have been transcribed by others for the guitar.