-La @code{@var{expresión_musical}} se invierte intervalo a intervalo, y
-después se transporta de manera que @code{@var{nota-origen}} se asigna
-a @code{@var{nota-destino}}.
+The @code{@var{musicexpr}} is inverted interval-by-interval around
+@code{@var{around-pitch}}, and then transposed so that
+@code{@var{around-pitch}} is mapped to @code{@var{to-pitch}}.