After developing its National Youth Orchestra of the USA and NYO2 programs, Carnegie Hall's Weill Music Institute has announced plans to launch NYO-Jazz next summer. This week on A Tempo (Saturday 7 pm), host Rachel Katz will speak with Douglas Beck, director of artistic training programs, about the new initiative, as well as this year's NYO-USA and NYO2 season, which began with a residency for both orchestras at SUNY-Purchase earlier this month. Rachel will also speak with two of this year's participants - David Kim, a cellist from East Brunswick, NJ, and Parker Jones, a French horn player from Bergenfield, NJ.