There are thousands of ways to practice one skill. For example, say you are practicing a new blues lick. How many ways can you devise to practice the lick?
- transpose it
- vary the rhythm
- change the notes
- change it from major to minor (or some other weird scale like octotonic/diminished or whole tone or bitriadic)
- sing it
- harmonize it (play a counter melody while you sing it, grab a partner and make a duet)
- play it in different styles (bebop, slow blues, up beat blues, rag time, New Orleans, Funky, George Shearing chords, McCoy Tyner 4ths, Red Garland 4-note-rootless+octave-melody)