4 Slurs should look nice and symmetric. The curvature may increase
5 only to avoid noteheads, and as little as possible. Slurs never
6 run through noteheads or stems.
14 \stemBoth a ( \stemDown a \stemBoth a-) a( c a-) a( e' a,-) a( g' a,-)
18 \stemBoth c ( \stemUp c \stemBoth c-) c ( a c-) c( d, c'-) c( f, c'-)