### 1.1.78 SostenutoEvent

Depress or release sostenuto pedal.

Event classes: music-event, pedal-event, sostenuto-event, span-event and StreamEvent.

Accepted by: Piano_pedal_engraver and Piano_pedal_performer.

Properties:

> `name` (symbol):

>   `'SostenutoEvent`

>   Name of this music object.

> `types` (list):

>   `'(general-music post-event event pedal-event sostenuto-event)`

>   The types of this music object; determines by what engraver this music expression is processed.

#### Internals Reference v2.18.2 (稳定分支).