 The short-lived Juan Crisóstomo Arriaga is credited as the main beginner of Romantic sinfonism in Spain.Although symphonic music was never too important in Spain, chamber, solo instrumental (mainly guitar and piano) vocal and opera (both traditional opera, and the Spanish version of the singspiel) music was written by local composers.Zarzuela, a native form of opera that includes spoken dialogue, is a secular musical genre which developed in the mid-17th century, flourishing most importantly in the century after 1850.