With polychord 2, you can share with SoundCloud!
Simply hit the record button, and polychord will immediately begin recording in real time. When you're finished, either hit the stop button or the record button and you'll be prompted to title and save your song.
Click the sharing button, select 'share with soundCloud', describe the song, choose if you want to post to twitter and facebook, and click 'upload'. After the track bounces and uploads (takes a couple of minutes), it will appear on your soundCloud account.