Never think purely in terms of your own instrument. If you are learning music by a particular composer listen to as much of their music as you can (Symphonies, Lieder, Opera, Chamber music), and then listen to the music that influenced them.

Interviews with musicians, composers and conductors
Never think purely in terms of your own instrument. If you are learning music by a particular composer listen to as much of their music as you can (Symphonies, Lieder, Opera, Chamber music), and then listen to the music that influenced them.
Have your ears open, your curiosity fresh, be disciplined in your practice, and keep the joy of playing/singing, always.