# Play notes simultaneously

``

    play_chord  notes (list)

Play a list of notes at the same time.

Accepts optional args for modification of the synth being played. See each synth’s documentation for synth-specific opts. See `use_synth` and `with_synth` for changing the current synth.

Introduced in v2.0

## Options

amp: | The amplitude of the note
amp_slide: | The duration in beats for amplitude changes to take place
pan: | The stereo position of the sound. -1 is left, 0 is in the middle and 1 is on the right. You may use a value in between -1 and 1 such as 0.25
pan_slide: | The duration in beats for the pan value to change
attack: | Amount of time (in beats) for sound to reach full amplitude (attack_level). A short attack (i.e. 0.01) makes the initial part of the sound very percussive like a sharp tap. A longer attack (i.e 1) fades the sound in gently.
decay: | Amount of time (in beats) for the sound to move from full amplitude (attack_level) to the sustain amplitude (sustain_level).
sustain: | Amount of time (in beats) for sound to remain at sustain level amplitude. Longer sustain values result in longer sounds. Full length of sound is attack + decay + sustain + release.
release: | Amount of time (in beats) for sound to move from sustain level amplitude to silent. A short release (i.e. 0.01) makes the final part of the sound very percussive (potentially resulting in a click). A longer release (i.e 1) fades the sound out gently.
attack_level: | Amplitude level reached after attack phase and immediately before decay phase
decay_level: | Amplitude level reached after decay phase and immediately before sustain phase. Defaults to sustain_level unless explicitly set
sustain_level: | Amplitude level reached after decay phase and immediately before release phase.
env_curve: | Select the shape of the curve between levels in the envelope. 1=linear, 2=exponential, 3=sine, 4=welch, 6=squared, 7=cubed
slide: | Default slide time in beats for all slide opts. Individually specified slide opts will override this value
pitch: | Pitch adjustment in semitones. 1 is up a semitone, 12 is up an octave, -12 is down an octave etc. Decimal numbers can be used for fine tuning.
on: | If specified and false/nil/0 will stop the synth from being played. Ensures all opts are evaluated.

## Examples

# Example 1
``
    play_chord [40, 45, 47]

    play 40
    play 45
    play 47
| ``
    # same as:
# Example 2
``
    play_chord [40, 45, 47], amp: 0.5

    play 40, amp: 0.5
    play 45, amp: 0.5
    play 47, amp: 0.5
| ``
    # same as:
# Example 3
``
    play_chord chord(:e3, :minor)
| ``