11 Across, Art of piano playing, (5) ??T??
13 Across, Ex-student starts to make notes,getting in usual mess, (7) A???N??
26 Across, Reluctant to pen unconventional yarn, (6) ?H?D??
I did think FORTE for 11 Across but I have for 6 Down as IN TRUTH and 7 down as TITAN and I have not completed 8 Down yet,
8 Down, More than one scripture teacher makes sound improvement,(9) R???S?E?S
Many Thanks Again to all who who have submitted Answers