Tremble: make level movement part of the performance

Choose the movement's musical purpose

Tremolo can make a sustained chord breathe, turn an organ into a rhythmic part or create a pronounced stereo gesture. Tremble provides circuit and motion choices for these roles. Begin by deciding whether the movement should sit quietly inside the performance or become the rhythm the listener follows.

Use a phrase with both a sustained note and a new attack. A deep setting can be attractive during the sustain while interrupting the next note's entrance. Keep the song's main pulse available so the movement has a clear relationship to it.

Circuit, mode and shape answer different questions

Bias, Opto and Harmonic select different amplitude behaviour. Harmonic creates a frequency-dependent amplitude relationship; it is not a pitch-shifting mode. Mono, Stereo and Pan determine the movement's channel relationship. Choose these before making a detailed waveform.

Rate operates as a free-running speed or a tempo-related division when Sync is engaged. Depth, Shape, Symmetry and Character develop the movement. Symmetry's stored centre corresponds to a balanced zero-percent offset, rather than an instruction to skew the cycle by half. Width, Mix and Volume complete the stereo and level balance.

Workflow one: an organ or keyboard with a useful pulse

Use a chord progression with the intended MIDI note lengths and hear it alongside the drums.

1. Choose a circuit and begin with modest Depth so the chords remain easy to follow.
2. Enable Sync if the pulse should repeat with the arrangement, then choose a useful rate relationship.
3. Adjust Shape and Symmetry while hearing how long the sound spends near its loud and quiet portions.
4. Set the mode and Width for the space the keyboard should occupy.
5. Match Volume and check the next chord's entrance.

A useful pulse supports the rhythm without making important notes vanish unexpectedly. If the movement fights the player's accents, change its timing or depth before making it sharper. A slower or less symmetrical cycle can change the apparent phrasing even when the MIDI notes stay the same.

Workflow two: a guitar that moves without taking over

Use a clean or sustained guitar line at its final arrangement level.

1. Compare Bias, Opto and Harmonic on the same phrase with the movement restrained.
2. Choose a free-running rate for an independent sway, or Sync for an explicitly repeating rhythmic role.
3. Bring Depth and Character up gradually and compare the attack with the sustain.
4. Use Mix and the stereo mode to keep enough direct focus, then check the phrase in mono.

Harmonic mode can change the perceived tonal emphasis as the movement develops. Hear the complete range of the melody rather than one held note. If the line's pitch remains correct but its tone seems to disappear at the wrong moment, reduce the movement or choose another circuit.

A creative use: a moving texture that enters for one section

Duplicate a sustained synth, guitar swell or vocal texture in the host and give the copy a more obvious Pan or Stereo movement. Bring that layer into a bridge or the final repetition of a motif while the direct arrangement stays stable. The movement can become a compositional contrast rather than a permanent effect.

Choose the cycle's relationship to the section before increasing Width or Depth. Hear the entrance and the return to the unprocessed arrangement. A dramatic moving layer is more convincing when its duration and register leave room for the main phrase.

Listen to the quiet half of the cycle

Before committing, hear the point where the part becomes least audible as well as the loudest point. Check whether the bass, lead or harmony still has the continuity it needs. Average loudness alone can hide that interruption.

Keep Tremble when its amplitude movement supports a clear musical role. The controls become easier to use when circuit, channel relationship and waveform each make a distinct contribution to the performance.