Under his direction , the choir also gave concert tours in Australia ( 1987 ) , Israel ( 1988 ) and Estonia ( 1989 , 1990 ) . The choir also gave concert tours in Australia ( 1987 ) , Israel ( 1988 ) , and Estonia ( 1989 , 1990 ) under his leadership .
Di bawah arahannya, koir juga memberikan lawatan konsert di Australia (1987), Israel (1988) dan Estonia (1989, 1990). Koir ini juga memberikan konsert jelajah di Australia (1987), Israel (1988), dan Estonia (1989, 1990) di bawah kepimpinannya.