aGuitar Pro is a computer software designed to improve musical skills of the bass/guitar player, as well as providing keys/scales/chords references, tablature tools, and bass/drums midi tracks for practicing.
  It includes:

• 'Ear Training' exercises, which are extremely useful for any musician.
• Tab viewer/player and a Tab Manager.
• Midi band: A set of tools for recording and playing bass/drums tracks, great for soloing.
• Chords/Keys/Scale Generators.
• Easily add customs scales/chords.
• Supports custom tunings.
• Plus more....