Ooooh a discordant view! How exciting. Can you elaborate?

Most acquisitions that google goes through they shut-down, unless it's really core (like Docs). Songza will be shut down, but the team will join Play or whatever...

Like Docs, Maps, blogger and youtube?

Docs was google's only docs service, and subsequent acquisitions have been squashed into it (e.g. etherpad). Maps is google's only maps service. Blogger was more-or-less google's only blog service until recently, and I wouldn't count on it surviving much longer in the age of google+. Youtube happened the other way around, in that google killed google video and merged it into youtube.

Is play music more established than songza? I think yes, and google is unlikely to maintain both of them in parallel.

I see this as similar to Waze acquisition. Waze continues to operate to this day.

Waze is an important data source for traffic in Google Maps. They didn't want to lose that data by killing the Waze app.

Seems like an aqui-hire.