PARIS, June 20 (Reuters) - Billionaire investor William Ackman’s Pershing Square Tontine Holdings (PSTH.N) signed a deal to buy 10% of Universal Music Group (UMG), Taylor Swift’s label, for about $4 billion, the companies said on Sunday. "As announced, the transaction is based on an enterprise value of 35 billion euros ($41.55 billion) for 100% of UMG"s share capital," Vivendi said. UMG, which is being spun-off by France"s Vivendi (VIV.PA), will complete its planned Euronext Amsterdam listing in late September, the media group said. Tontine said it will distribute UMG shares to its shareholders only after the completion of listing. "Promptly following the completion of the listing and the effectiveness of the registration statement, the UMG shares acquired by PSTH will be distributed to our shareholders." Vivendi, controlled by French billionaire Vincent Bollore, is planning to cash in on its UMG crown jewel by spinning off the entity to existing shareholders. Earlier this year, the consortium led by Tencent Holdings Ltd (0700.HK) purchased an additional 10% stake in UMG making the total equity stake controlled by the Chinese tech giant to 20%. "The arrival of major American investors provides further evidence of UMG"s global success and attractiveness," Vivendi said. Tontine said it will continue to exist as RemainCo after the transaction with an access to about $2.9 billion in cash and intends to pursue a business combination with an operating business promptly. The blank-check firm, in its statement, pointed to UMG"s operating profit growth of more than 20% per annum since 2017 and analysts" estimation of operating profit of 1.5 billion euros ($1.78 billion) for 2021. Tontine became the biggest ever SPAC when it raised $4 billion in an initial public offering (IPO) last summer, with Ackman"s hedge fund Pershing Square committing a minimum of an additional $1 billion. ($1 = 0.8424 euros) ($1 = 0.8423 euros) Reporting by John Irish; Editing by Edmund Blair Our Standards: The Thomson Reuters Trust Principles.