Looks like we were right about .CO. It's not a speculation sport, it's a start-up branding winner!
Senzari Rebrands Its Music Service: Wahwah.co
"Senzari, the Miami-based Pandora competitor backed by $3 million in funding from 500 Startups and other angels, is making good on its recent acquisition of the Berlin-based streaming music app Wahwah.fm. The company is now spinning off its music efforts as a mobile-first streaming radio application, rebranded as just Wahwah. In the meantime, the Senzari web-based streaming service is being temporarily shut down, as the product is rebuilt." More