Outspoken singer and activist Billy Bragg has taken aim at Taylor Swift, accusing her of making a veiled "corporate power play" by pulling her back catalogue from streaming service Spotify.com.

Swift hit headlines when she removed her songs from Spotify earlier this month (Nov14), explaining she did not agree with the perception that music "should be free", but Bragg insists she wasn't being completely honest with her fans.

In a post on Facebook.com, Bragg writes, "What a shame that Taylor Swift's principled stand against those who would give her music away for free has turned out to be nothing more than a corporate power play.

"These worthy sentiments have been somewhat undermined by Swift making her new album and back catalogue available on Google's new Music Key streaming service... which also offers listeners a free service alongside a premium subscription tier.

"If Ms Swift was truly concerned about perpetuating the perception that music has no value and should be free, she should be removing her material from YouTube, not cosying up to it. The de facto biggest streaming service in the world, with all the content available free, YouTube is the greatest threat to any commercially based streaming service. Google are going after Spotify and Taylor Swift has just chosen sides.

"That's her prerogative as a savvy businesswoman - but please don't try to sell this corporate power play to us as some sort of altruistic gesture in solidarity with struggling music makers."

Swift has yet to respond to Bragg's rant.