I saw a sign for this concert the other day at the movie theater. All I know is that it will be Udit and Shreya Ghosal. The event is scheduled for June 18, 2005 7:30 pm at the Flint Center for the Performing Arts. 21250 Stevens Creek Boulevard, Cupertino, CA 95014.
I am guessing there will or may have been other venues across the US as well. I googled the event and http://sulekha.com/events/evtdp.aspx?cid=75756 has information for the Houston concert on June 19th.
Folks in other cities may want to check with their local Indian businesses for info.