The 27th annual Latin Grammy Awards are back at Las Vegas’ MGM Grand Garden Arena, with Roselyn Sánchez hosting for a 10th time. So, what should you expect?Producer Edgar Barrera — no stranger to leading the Latin Grammy nominations — is again in the top spot with 10 nods this year, including record, producer and songwriter of the year plus two each for song and album of the year. Many of the nominations involve his collaboration with Karol G and Carín León. Speaking of Karol G: She &...