+%% don't exceed ppppp or fffff; see midi.scm.
+ppppp = #(make-dynamic-script "ppppp")
+pppp = #(make-dynamic-script "pppp")
+ppp = #(make-dynamic-script "ppp")
+pp = #(make-dynamic-script "pp")
+p = #(make-dynamic-script "p")
+mp = #(make-dynamic-script "mp")
+mf = #(make-dynamic-script "mf")
+
+%% f is pitch.
+"f" = #(make-dynamic-script "f")
+ff = #(make-dynamic-script "ff")
+fff = #(make-dynamic-script "fff")
+ffff = #(make-dynamic-script "ffff")
+fffff = #(make-dynamic-script "fffff")
+fp = #(make-dynamic-script "fp")
+sf = #(make-dynamic-script "sf")
+sfp = #(make-dynamic-script "sfp")
+sff = #(make-dynamic-script "sff")
+sfz = #(make-dynamic-script "sfz")
+fz = #(make-dynamic-script "fz")
+sp = #(make-dynamic-script "sp")
+spp = #(make-dynamic-script "spp")
+rfz = #(make-dynamic-script "rfz")