SoundCloud, the social audio platform has been gaining steadily in popularity since its launch in 2008. Until this year. In the past few months, the company founded by Alexander Ljung and Eric Wahlforss has skyrocketed to an enviable status in the digital music space.

Today, SoundCloud celebrates 5 million users, an increase of four million over the last year, and an undisclosed amount of funding from Guy Oseary and Ashton Kutcher’s A-Grade Fund. And, according to SoundCloud, the platform to create, record, promote and share their sounds on the web is adding more than 20,000 new sound creators worldwide every single day.

“It’s totally awesome to welcome Guy and Ashton into the SoundCloud family, especially this week as we celebrate such a significant user milestone. A-Grade are joining our mission to get everyone creating and sharing sound in their everyday lives, and with their knowledge and passion for new technologies and using social media to reach and influence people all over the world, their support will be invaluable.”

-Alexander Ljung, founder and CEO of SoundCloud

In the past year alone, SoundCloud has increased by more than four million users; launched new features including SoundCloud Labs and recently integrated with Tumblr, guaranteeing it mainstream status. Also this year, SoundCloud added Union Square Ventures‘ Fred Wilson from Union Square Ventures and Index Ventures‘ Mike Volpi to its team. Check out this neat infographic to see SoundCloud’s rise to rock.

tumblr lmtubtutlo1qzijxbo1 r2 500 SoundCloud celebrates 5 million users and funding from Ashton Kutcher

See our recent interview with SoundCloud’s Alexander Ljung here.