Hook, the music platform that enables fans to easily, quickly and legally remix popular music for use on social media, announced that it has extended its Seed Round to bring on additional investments from Natalie Massenet and Nick Brown's Imaginary Ventures and a group of strategic music and social media industry investors and advisors. This additional investment brings the total of Hook's Seed round, which was led by Point72 Ventures and Edgar Bronfman Jr.'s Waverley Capital, to $3.5 Million.