From which country is the composer of La cetra, published in 1727?
La cetra (Vivaldi) La cetra, Op. 9, is a set of twelve violin concertos by Antonio Vivaldi, published in 1727. All of them are for violin solo, strings, and basso continuo, except No. 9 in B flat, which features two solo violins. The set was named after the cetra, a lyre-like instrument, and was dedicated to Emperor Charles VI.
Joaquín Martínez de la Roca Joaquín Martínez de la Roca (Zaragoza, c. 1676 - Toledo, 1747 or 1756) was a Spanish composer.