for giving both I am qualified. I, Valentijn M. de Wolf, live in nabourhood of Alkmaar/ Zaandam/ Amsterdam. Give lessons at every age; use multiple methodes. Through much experience as Performing Violinist/ Viola player, I know many compositions on different kinds of level. Propagate playing together and to enjoy! Developed for the kids a special methode; combination of bright colored blocks who can form a scale (right under)! Kids can use then there creativity completely! Gave also lessons to many adults; played with two pupils the Dworak Terzet, with an other the Concert for two violins from Bach, third I learned him to play Klezmer! Gave a lot of pleasure for them and for me eather!