Midi: always set instrument for new track. Unconfuses some midi players.

diff --git a/lily/staff-performer.cc b/lily/staff-performer.cc
index 3ad276890b7a45765c0b7157cb912c78aebe50f7..1f34290aac4451d185499cb8c01678daff86534f 100644 (file)
--- a/lily/staff-performer.cc
+++ b/lily/staff-performer.cc
@@ -115,6 +115,8 @@ Staff_performer::new_audio_staff (string voice)
     }
   announce_element (Audio_element_info (audio_staff, 0));
   staff_map_[voice] = audio_staff;
+  if (!instrument_string_.empty ())
+    set_instrument (channel_, voice);
   return audio_staff;
 }