2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. Strictly Strings introduces your students to ensemble playing right away. And in about four months, they'll be playing "real" orchestra music! They'll be playing music in 3-part harmony, with enthusiasm and expression and with all four instruments playing on all four strings. Strictly Strings Books 1 and 2 each contain over 60 rich and interesting musical selections that are drawn from international folk songs, famous classical melodies, symphonic themes and original compositions