For years now, the Vallés Symphony Orchestra has dedicated one of its 'Simfònics' concerts to the 'Festival de Valsos i Danses'. It's a festive show that includes waltzes and polkas, in addition to many other types of music for traditional dances – just in time to get you in the holiday spirit. They've invited mezzo-soprano Marta Valero to be the featured soloist, as well as Basque conductor Diego Martín-Etxebarría.