| o | a part of the score that must be performed without change or omission |
|---|---|
| o | a persistent but subordinate motif |
| o | in a manner that cannot be evaded |
| o | in an obligatory manner |
| o | morally or legally constraining or binding |
| o | required by obligation or compulsion or convention |
| o | bind by an obligation |
| o | provide a service or favor for someone |
| o | force or compel somebody to do something |
| o | under a moral obligation to do something |
| o | someone who performs a service or does a favor |
| o | showing a cheerful willingness to do favors for others |