One suggested improvement, otherwise LGTM Trevor https://codereview.appspot.com/47900043/diff/1/Documentation/learning/fundame... File Documentation/learning/fundamental.itely (right): https://codereview.appspot.com/47900043/diff/1/Documentation/learning/fundame... Documentation/learning/fundamental.itely:271: @emph{A @code{\score} block must contain a music expression.} Perhaps to avoid ambiguity, "must contain exactly one music expression" (as before) or "must contain a single music expression" (as a variation).
Suggestion from Trevor
LGTM