samsung S6 Tablet to use as monitor

[Tomhagg]

Im using USB C TO USB A ADAPTOR AND PRINTER CABLE SO I CAN CONNECT TABLET TO GENOS IVE CONNECTED KEYBOARD TO INTERNET BUT TABLET SCREEN NOT SHOWING DO I NEED AN APP TO USE MY TABLET AS IM THINKING ON GETTING SONG BOOK ANY HELP WOULD BE GREAT THANKYOU IN ADAVANCE.