The top nominee at the 23rd annual Latin Grammy Awards on Thursday is the Puerto Rican superstar Bad Bunny, with 10 nods for Un Verano Sin Ti, his chart-topping, streaming-dominating release that is the year's most popular LP.But for the wider Latin music business, Bad Bunny is the cherry on top of an extraordinary year on streaming services and on tour, by artists including the singers Karol G, from Colombia, and Anitta, from Brazil; genre-crossing innovators like the Spanish pop disrupter Rosalia; and regional Mexican bands like Grupo Firme.