Music Trainers includes the following applications:

Note Trainer:
Improves your ability to name notes on the staff

Key Trainer:
Improves your ability to name key signatures

Interval Trainer:
Trains your ear to distinguish between different intervals

Scale Trainer:
Trains your ear to recognize the major scale, minor scales, and church modes

New in this version: The new version includes the Guitar Trainer and high quality stereo sounds.