"When There is More Beauty in the Contrary", Negar and Salim's single released on 1/1/11, is an oud and electric guitar instrumental. It is a portrayal of ancient east versus modern west.
"Combining traditionally dissimilar forces into one cohesive composition", this song reflects its composers' backgrounds in Persian contemporary and progressive rock genres.
Remarks about the translation
1. "Single" = Sencillo ( http://es.wikipedia.org/wiki/Sencillo ) 2. "When There is More Beauty in the Contrary" is the name of a music single. But I would be thankful if the translation of the title could be also provided in parenthesis. 3. Oud is a musical instrument = (Laúd árabe)
"When There is More Beauty in the Contrary", il singolo rilasciato da Negar e Salim il 1/1/11, è un pezzo strumentale di oud e chitarra elettrica. È un ritratto dall'antico Oriente in contrapposizione con l'Occidente moderne.
"Combining traditionally dissimilar forces into one cohesive composition", questa canzone riflette il background dei suoi compositori nei generi persiani di rock contemporaneo e rock progressivo.
Remarks about the translation
"When There is More Beauty in the Contrary" = "Quando c'è maggior bellezza nel contrario"
"Combining traditionally dissimilar forces into one cohesive composition" = "Combinando forze tradizionalmente dissimili in un'unica composizione coesa"
I've left "background" because it is clear in Italian too. You can translate it with "sottofondi, origini", but it is not as clear as "background".