FB-60: build the chord before switching on the chorus
Use FB-60's oscillator, sub and noise balance, filter contour and chorus choices for bass, keys and animated chord parts.

Make the dry patch carry the notes
FB-60 is useful for direct analogue-style bass, compact chord stabs and sustained keyboard parts. Its oscillator, sub and noise sources feed filtering and envelopes, with chorus and further effects available afterwards. Begin with the musical part and a dry sound that can carry it.
Choose the intended register and MIDI note lengths before adding width. A short stab, a connected chord progression and a mono bass line need different envelope relationships. The chorus can enrich a useful patch, but it cannot choose the right articulation for the arrangement.
Keep the source, filter and chorus decisions separate
The oscillator supplies the main waveform, the sub contributes a lower foundation and noise adds a different excitation. Balance them for their roles rather than treating every source as something that should be fully raised. Use the filter and its envelope to establish the brightness over time.
Chorus I, II and their combined choice provide different modulation colours. They are separate from the additional effect slots and the delay and plate-reverb treatment. Compare the chorus first, then decide whether another spatial or movement effect is still needed.
Use noise deliberately for a short attack or a breathier texture, and check that it does not keep the gaps audibly busy.
Workflow one: a chord stab with a clear rhythm
Use the progression with the bass, drums and vocal or lead part available.
- Choose an oscillator waveform and keep the sub and noise restrained while setting the main tone.
- Set a quick enough amplifier attack and a release that leaves the intended gap between stabs.
- Use the filter envelope for a useful bright opening or darker body.
- Compare Chorus I, II and the combined choice at a sensible level.
- Recheck the lowest chord and the transition to the next voicing.
If the stab becomes a continuous wash, shorten the envelope or reduce the modulation and space before lowering the whole keyboard part. A small chorus contribution can make a chord feel more developed without removing the gaps that give it rhythm.
Workflow two: a bass with a dependable foundation
Use the actual bass line beside the kick.
- Begin with a simple oscillator and sub balance that makes the pitch and attack easy to follow.
- Set the filter and envelope so the strongest accents speak without making quiet notes disappear.
- Choose voice behaviour and any glide for the phrase's overlaps.
- Keep chorus restrained while judging the low foundation, then compare any added movement in the arrangement.
A broader solo sound is not automatically a stronger bass part. If the low register becomes vague or the kick loses its place, reduce the modulation or sub contribution and reassess the note shape. Keep the source balance connected to the song's actual register.
A creative use: turn a repeated chord into an arpeggiated answer
Use the arpeggiator to develop the notes of a held voicing into a rhythmic response. Establish the note order and timing with effects restrained, then add a short delay or plate contribution that supports the spaces between events. The same patch can become a different arrangement role without replacing its basic tone.
Hear the arpeggio through the chord change and at the section ending. Repeated notes, release and delay can all fill time, so decide which element should carry the movement and keep the other contributions supporting it.
Finish the effects after the performance works
Compare any additional effect slots, delay and reverb with the chorus already chosen. Each new stage should add a useful role rather than another indistinct layer of width or sustain. Match the final output when comparing alternatives.
Keep FB-60 when the source balance and envelope make the part playable, with chorus providing an intentional colour. A straightforward patch often leaves more room for the performance than a large stack of modulation and ambience.
Useful references
Official documentation for the technical details mentioned above.