Emergence for Natasha St-Pier (1995) Mou Tian for Kelly Chen, Daniel Chan, Joyce Yau, Ray Chan (1995) En La Aerena for Guillermo Saldana (1995) The Song of Stars for Leon Lai & Alan Tam (1996) Ni Shi Shui for Leon Lai(1996) C'est un promesse for Johanne Blouin (1997) Kaze To Kino Uta for Sincere (1998) Shitteru Tsumori for Yoko Oginome (1999) Watashi Dake Ite for Noriko Sakai (2000) Here We Are for Audrey De Montigny (2006) Love performed by Audrey de Montigny for Amnesty International's Make Some Noise (2007) Rainbow Bridge performed by Sunmin (2010) You Are Not Alone performed in duet with Wheesung (2010) I'm Sorry + My Funny Valentine performed with John Park (2011) Imagine with Chen of EXO (2016) Sound of Your Heart with Lee Dong-woo, Yesung of Super Junior, Sunny of Girls' Generation, Luna of f(x), Wendy and Seulgi of Red Velvet, and Taeil and Doyoung of NCT (2016) It's Complicated with Piera Van de Wiel (2018)