jjSwing rhythm engine

The ultimate style for practicing jazz standards

jjSwing's unique features are:

• A realistic walking bass with melodic lines, which adjust to the tempo

• 11 drums variations (brushes, hi-hat, ride, shuffle)

• Double-time capability (play twice as fast with chord changes at original tempo)

• The possibility to adjust bass and drums independently

jjSwing is optimized to work with the internal FluidSynth as output synth. If you use a different output synth, you might hear weird sounds.

Note that current jjSwing version only supports 4/4 time signature. Jazz waltz support will be added later.

Rhythm parameters

jjSwing has 2 specific rhythm parameters, bass style and drums style.

Bass style

Possible values are shown in the image below.

Bass style	Description
auto	Actual bass style will depend on the rhythm variation (e.g. Main A-1)
2-feel	Walking in two
walking	Walking bass
double-note	Walking bass with many double notes (repeated notes)
double-time	Walking bass played twice as fast while preserving chord changes at original tempo. This should be used when Drums style is also set to double-time.
intro	To be used with rhythm variation Intro A
ending	To be used with rhythm variation Ending A

Drums style

Possible values are shown in the image below.

Drums style	Description
auto	Actual drums style will depend on the rhythm variation (e.g. Main A-1)
brushes 1/2	2 different brushes-based drums
hi-hat 1/2	2 different hi hat-based drums
ride 1/2/3/4	4 different ride-based drums
shuffle 1/2	2 different 12/8-based drums
double	Drums played twice as fast while preserving chord changes at original tempo. This should be used when Bass style is also set to double-time.
intro	To be used with rhythm variation Intro A
ending	To be used with rhythm variation Ending A

Settings

jjSwing settings are available in the Options/Rhythms tab or in the Rhythm selection dialog, when you select the jjSwing styles rhythm provider, as shown below.