C aug
C E G#
C# aug
C# F A
D aug
D F# A#
Eb aug
Eb G B
E aug
E G# C
F aug
F A C#
F# aug
F# A# D
G aug
G B D#
G# aug
G# C E
A aug
A C# F
Bb aug
Bb D F#
B aug
B Eb G
Synthesizers are electronic instruments which can produce a wide range of sounds through analog or digital means. Early analog synths, like the Roland Jupiter-8, operated by generating audio signals of different frequencies, however most modern synths, like the Roland Fantom-X (pictured) use digital technology to produce sounds. Synthesizers generally incorporate a traditional piano-style keyboard in their design with additional controls such as buttons and knobs to allow users to modify the sound.