Possible Clues:

• Foreign-born musician with a Presidential Medal of Freedom
• Cellist with many Grammys
• Many-time Grammy-winning cellist
• Polar Music Prize recipient of 2012
• 18-Grammy instrumentalist
• Classical musician whose given name is a toy
• Classical musician behind the nonprofit Silkroad
• Musician whose first name is a toy
• Seated strings star
• Big name among cello virtuosos