According to a 2015 report by the Cervantes institute, the number is almost twice 28 millions (veintiocho millones). There are approximately 51 million speakers, of which 41 million are native speakers and the rest are multilingual people.
re are a couple of key differences and similarities between piano and violin. Pianos are more expensive. Violins are more portable. Violin is more fragile compared to piano. Violin has a stiffer learning curve. Both instruments are great for ensemble playing. Piano has more harmonic versatility.