Question: Which Original Broadway production has a First US National Tour of Roger Bart?
SQL: SELECT "Original Broadway production" FROM "2-12084106-1" WHERE "First US National Tour" = 'Roger Bart';

Question: Which Original Broadway production has a Role of Dr. Victor von Frankenstein?
SQL: SELECT "Original Broadway production" FROM "2-12084106-1" WHERE "Role" = 'Dr. Victor von Frankenstein';

Question: Which Role has a First US National Tour of Roger Bart?
SQL: SELECT "Role" FROM "2-12084106-1" WHERE "First US National Tour" = 'Roger Bart';

Question: Which Original Italian production has a First US National Tour of Joanna Glushak?
SQL: SELECT "Original Italian production" FROM "2-12084106-1" WHERE "First US National Tour" = 'Joanna Glushak';