If you use Tap Tempo, the slowest setting is Whole Note which while give you a bar in terms of time.

If you need slower rates, choose Whole note, check its value in Hz, set T_Rate on OFF and set Rate to the value you like in Hz.

Example:

at 120 bpm a Whole Note is 0.50Hz. If you want 4 bars > 0.50:4 = 0.125Hz.

There is no way at the moment you can have slower values than a Whole Note using TTempo.

Best

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