Yoon Soo Lim is a music teacher and department chair at an independent school in Pennsylvania. She received undergraduate and graduate degrees in piano performance, music history and choral conducting. She found a love for teaching young children and pursued studying Kodály methodology, receiving certification in levels I-IV. She loves instilling love of music in her students and integrating technology in her classroom. She enjoys teaching general music classes, guitar classes, advising guitar club and conducting two choirs. She joined Twitter PLN in October, 2009, and found great educators who are passionate about teaching and learning; she enjoys sharing her knowledge with her students and peers.