Tip 19: Always Be An Active Listener
Keep testing yourself – practice really does make perfect!
When you are listening to music, be an active listener, not a passive one. Try to identify the key or mode, the time signature and the instruments used.
If you find one aspect harder than the others (maybe you can never tell the difference between a trumpet and a saxophone?) don’t give up – isolate the problem areas.
For example, you could search YouTube for trumpet pieces and saxophone pieces and listen to several in succession – this will help your ear to discriminate the sounds.