Stefanie Keenan/Getty; Lauren Sanchez Bezos/Instagram; Frazer Harrison/Getty Jeff Bezos and Lauren Sánchez tied the knot in a black-tie ceremony in Venice, Italy, on Friday, June 27 The couple hired several high-profile performers for their wedding festivities, including Matteo Bocelli, who sang at the ceremony, and Usher and DJ Cassidy, who will perform at a final wedding bash on Saturday night, June 28 "It's the culmination, the final big party," a source tells PEOPLE of Saturday's event Jeff BezosandLauren Sánchez Bezos'lavish weddingwouldn't be complete without some A-list performers. For their black-tie ceremony on the island of San Giorgio Maggiore in Venice, Italy, on Friday, June 27,Andrea Bocelli's sonMatteo Bocelliserenaded the bride and groom and their guests with a rendition of the Elvis Presley classic "Can't Help Falling in Love." Now, a source tells PEOPLE that two other big entertainment names will put on performances at the couple's final wedding bash on Saturday night, June 28.Usheris set to sing, andDJ Cassidywill perform a set. Both are friends and favorite musicians of the newlyweds. Lauren Sánchez Bezos/Instagram "Cassidy is known for these types of parties — he's a go-to who's performed at a lot of the other guests' events likeOprah's school opening,Kris Jenner's 60th [birthday party],Kourtney [Kardashian]'s wedding and Dolce & Gabbana's parties, so the couple is a fan," the source says of thePass the Michost. The source adds that Jeff, 61, and Lauren, 55, want to have a night centered around music to see their guests off after a busy week of wedding festivities. "[They're] going to set the tone. Tonight is all about the music," the source says of the musical performances. "It's the culmination, the final big party." "First night was dinner, second was the ceremony with Andrea Bocelli's son performing, and tonight's the full-on dance floor," the source adds. Luigi Iorio/GC Images The Amazon founder and the former journalist have been celebrating their Venetian nuptials with a slew of famous friends, includingOprah Winfrey,Gayle King,Orlando Bloom,Kim Kardashian,Khloé Kardashian,Kris Jenner,Kylie Jenner,Karlie Kloss,Leonardo DiCaprioandTom Brady. The PEOPLE Appis now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! Although manyVenice locals have expressed concernsthat the high-profile wedding would cause major disruptions, the source also tells PEOPLE that things in the city are "still running as normal" despite the celebrities' presence in town. MARCO BERTORELLO/AFP via Getty Ahead of the wedding, on Sunday, June 22, the soon-to-be bride and groom were spotted on Jeff's$500 million superyachtKuru, off the coast of Europe, enjoyinga foam partywith their friends. Wearing their swimsuits, the couple played around in the foam that bubbled up on the deck in clouds of thick, frothy bubbles. Partygoers also bounced around giant blue, pink and yellow beach balls, and dove off the yacht to swim in the ocean. Jeff and Lauren were later photographedarriving at the Aman Hotelin Venice on Wednesday, June 25.PEOPLE confirmedthat the couple had touched down in the Italian city via helicopter earlier that day. The wedding festivities commenced on Thursday, June 26, with an elegant welcome party, held in a closed cloister adjacent to the Madonna dell'Orto church. The couple and their guests dined on pizza cooked onsite by a famous Neapolitan chef, along with fried zucchini flowers, arancini, octopus and cod. Dessert included pastries and lemon cakes. Read the original article onPeople