Here are two scales, one alto and one tenor, with the real sounds.
It will be seen from these illustrations that the C located by the clef sign in the alto on the third line and the tenor clef on the fourth line is the one situated on the first leger line below the staff in the treble clef. Having this fact in mind, the lover of orchestral music can learn, with a little practice, to read viola parts and ’cello or bassoon passages which run up into the tenor clef. The following illustration shows a ’cello passage with the middle measure written on the tenor clef, and also the same passage written wholly on the bass clef:
