Hi, having just read http://www.gramophone.co.uk/features/focus/tuning, I am thinking about creating an external similar to [mtof] (maybe something like [mtof_tuning] which should be able to change to different tuning systems like the ones outlined in the article, and the tuning should be settable by init parameters and [set( messages. Does an object like this already exist? Note, that I won't start programming in the next few months until I have more time. But I think, that such an object would appeal to several Pd users, and it should not be too hard to build it. Comments, ideas etc. welcome. Thanks, Thomas