LilyPond Internals Reference: 1.1.101 TempoChangeEvent

### 1.1.101 `TempoChangeEvent`

A metronome mark or tempo indication.

Event classes: `music-event`, `StreamEvent` and `tempo-change-event`.

Accepted by: `Metronome_mark_engraver`.

Properties:

`name` (symbol):

  `'TempoChangeEvent`

  Name of this music object.

`types` (list):

      '(event tempo-change-event)

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

#### LilyPond – Internals Reference v2.24.4 (stable-branch).