We shall have to go in ten minutes.

I must rush to the piano, though I am in rather an inconvenient toilette: I may as well accustom myself to play in it.

I shall have to spend three hours this evening without any music.

Well, to make up for it, I will occupy myself for the next ten minutes with an exercise for this obstinate fourth finger, though it is pretty dry.

That weak finger has been a hindrance to many a fine passage and scale.