Just discovered 2 apps that allow strings to be added to recordings, and there may be free version/s;
http://www.native-instruments.com/#..._campaign=SSPro+instore&utm_source=newsletter
http://www.youtube.com/watch?v=wNp2e-OAhNk
Another
http://www.youtube.com/watch?v=6IsUDm3ADIg&feature=related
http://www.native-instruments.com/#..._campaign=SSPro+instore&utm_source=newsletter
http://www.youtube.com/watch?v=wNp2e-OAhNk
Another
http://www.youtube.com/watch?v=6IsUDm3ADIg&feature=related