music21 - Transpose streams to a given key
<p>Is there a function or easy way to transpose a stream to a given key?</p>

<p>I want to use it in a loop, e.g, take a set of major streams and transpose all of then to C major (so then I can do some statistical work with them).</p>

<p>All the transpose tools I saw work with intervals or number of tones, not fixed keys. It shouldn't be so hard to write my function, but I suppose that it has to be already done... Thanks</p>