Music service SoundCloud has announced an expansion into the US, with a new office in San Francisco. The Berlin-headquartered startup already has a London office, but this is its first serious push beyond Europe. The company hopes to use the new SF office as a way to get more US startups to use its open API, adding to the 120 apps and services that already integrate SoundCloud. “Our move to San Francisco is reminiscent of when my co-founder, Eric Wahlforss and I first launched SoundCloud,” says CEO Alexander Ljung. “Then it was the two of us working out of a cafe in the Mitte district of Berlin and sleeping on friends’ floors. We still very much maintain that start-up ethos and are starting our US venture based out of The Summit cafe.” The news follows SoundCloud’s recent news of investment from Union Square Ventures and Index Ventures. The service currently claims 2.8 million registered users, and has notched up 500,000 downloads for its iPhone, Android and Mac OS apps.