// Return name of all the keys. // This information is generated from ModelPerformer.getName() // returned from getPerformers(). public String[] getKeys() { String[] keys = new String[128]; for (ModelPerformer performer : getPerformers()) { for (int k = performer.getKeyFrom(); k <= performer.getKeyTo(); k++) { if (k >= 0 && k < 128 && keys[k] == null) { String name = performer.getName(); if (name == null) name = "untitled"; keys[k] = name; } } } return keys; }