Red Rover, Red Rover — Joan Hess

LITTLE RED LIES
Wow! Lydia had been chosen to play violin in the International Youth Orchestra. It was a dream come true -- a week in the Big Apple, meeting kids from all over the world. There was one cute Russian guy in particular! Lydia thought they could make beautiful music together.
But some kind of funny business was going on. Who were those mysterious men lurking around? And how did Lydia get involved in this anyway? She didn't know whom to believe or trust. She wanted to be in an international orchestra, not an international incident...