Famed tenor Andrea Bocelli performed at TD Garden on Saturday night, his first appearance in Boston in more than half a decade, but a few ticket-holders may have decided to sit this one out after hearing some upsetting news about the singer over the weekend. Bocelli’s reportedly been tapped to sing at Donald Trump’s inauguration on Jan. 20, and fans are decidedly not happy, taking to social media to express their disappointment. Using the hashtag #BoycottBocelli, a number of Twitter users begged the Italian singer to reconsider, while others threatened to dump Bocelli’s CDs in the trash and not attend his future concerts. Bocelli’s not the only one receiving hate. The inaugural committee announced last week that Jackie Evancho, the 16-year-old opera singer who was runner-up on “America’s Got Talent” half a decade ago, will be singing the national anthem at the ceremony, and she has received her fair share of online backlash for signing on. “My family is kind of a big target,” Evancho told People last week, adding that she also “get[s] a lot of love.” While plenty of people are not happy about the picks, organizers of the inauguration celebration are probably breathing a sigh of relief; they reportedly struggled to find high-profile musicians to agree to perform, with artists such as Elton John and John Legend publicly saying they wouldn’t even consider attending the event. Inauguration events in years past have been star-studded affairs, with performances from the likes of Frank Sinatra, Ethel Merman, Barbra Streisand, Bob Dylan, Fleetwood Mac, Jessica Simpson, Aretha Franklin, James Taylor, Kelly Clarkson, and Beyoncé — just to name a few. Had Hillary Clinton won the election, we’re guessing — with all of her celebrity supporters, from Jay Z to Lady Gaga to Madonna — it would’ve been pretty easy to find some iconic musicians to take the stage.