Twitter chief exec Jack Dorsey confirmed that his company invested about $70 million in streaming music service SoundCloud through Twitter Ventures earlier this year. SoundCloud is a popular online outlet for new music and “a favorite of musicians and fans, attracting what it says are 175 million users worldwide,” reports The New York Times. The site struggled earlier with copyright issues, but has since signed licensing deals with publishers and record companies. In March, SoundCloud debuted “subscription service SoundCloud Go, making a catalog of more than 125 million songs available to people at $10 a month, with a free version supported by advertising,” notes NYT.