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Justin Bieber<\/a> was having a great time bringing joy and merriment to a lively\u00a0sangeet ceremony in Mumbai, India, on Friday.<\/span><\/p>\n The “Peaches” singer, 30, performed live at the pre-wedding ceremony for <\/span>Indian billionaire heir Anant Ambani and his fianc\u00e9e,\u00a0Radhika Merchant<\/a>, and appeared to have a great time belting out a slew of his biggest hits for the enthusiastic and remarkably large audience.<\/span><\/p>\n An eyewitness tells ET, “Justin was dancing and vibing to the songs all over the stage. He was smiling while the audience sang his songs into his mic.”<\/span><\/p>\n According to the eyewitness, Bieber “played his best tracks, from ‘Baby’ to ‘Peaches,’ and the performance lasted about an hour or so.”<\/span><\/p>\n “The majority female crowd felt fangirl moments when he performed! It was an absolutely unforgettable experience!” the eyewitness adds.<\/span><\/p>\n Bieber — who is <\/span>currently expecting his first child<\/a> with wife <\/span>Hailey Bieber<\/a> — shared some snapshots from the event on Saturday, including a slideshow of photos showing him hanging out backstage with the wealthy groom and bride-to-be. Bieber captioned the slideshow with a trio of smiling face with hearts emojis.<\/span><\/p>\n The pop star also posted a number of videos to Instagram of him performing on stage.<\/span><\/p>\n In one clip, he brought the mic up to the front of the standing audience and sang along and danced with fans in the front row.<\/span><\/p>\n Bieber also held the mic out to the crowd as the entire audience belted out the lyrics to his songs without missing a beat.<\/span><\/p>\n The wedding between\u00a0Anant and\u00a0Radhika is reportedly being referred to as India’s “wedding of the year,” <\/span>according to CNN<\/em><\/a>. Anant is the son of billionaire\u00a0businessman Mukesh Ambani, chairman of\u00a0Reliance Industries. Mukesh is Asia’s richest man with a net worth at whopping $114 billion, according to <\/span>Forbes<\/a><\/em>.\u00a0Meanwhile, Radhika is the daughter of Viren Merchant, the CEO of\u00a0ENCORE Healthcare.<\/span><\/p>\n Bieber’s performance over the weekend — which comes several days before the couple’s massive three-day wedding, set for July 12-14 — comes <\/span>a few months after the couple were previously celebrated<\/a> at another pre-wedding event <\/span>that featured a live performance from Rihanna<\/a> back in March.<\/span><\/p>\n Rihanna reportedly earned $8 million<\/a> for her appearance, while <\/span>Times of India<\/em><\/a>\u00a0reports Bieber was paid $10 million for his performance over the weekend.<\/span><\/p>\n