GroupMe: SIGN UP NOW: Lessons in pitching, leading, and building a company from Steve Martocci, the serial entrepreneur who sold GroupMe for $85 million when he was just 27 - and has raised more than $100 million for his new music startup Splice

Business InsiderOne, two, three. First came GroupMe, the messaging company sold to Skype in 2011 at just a year old. Then Blade, the "Uber for helicopters" startup founded in 2014 that's become a fixture of the summering set and now pivoted amid the pandemic. And now Splice, the music platform that's raised more than $100 million, per Pitchbook, on the way to remaking how songs are produced.See the rest of the story at Business InsiderNOW WATCH: Why thoroughbred horse semen is the world's most expensive liquidSee Also:The legal and tax implications of taking your company remote permanentlyThe GPA and GMAT scores you'll need to land a spot at the top 20 US business schools, in one chartPOWER PLAYERS OF CONSULTING: Meet the 38 consultancy stars disrupting the $130 billion industry and solving problems for clients in crisisSEE ALSO: Business Insider presents: Starting Up with Slack cofounder and CTO Cal Henderson