They have been singing together for more than 40 years.

She'd been singing for someone almost all the time of late.

She would sing for 15 to 20 minutes and run back home.

Let him sing my words for me, when he can.

I'll sing for them any time they ask me to.

I would have been singing it for the next 20 years.

As if she were singing for her father, again, after all this time.

He didn't sing in public again for the rest of his life.

At that time, I had been singing for seven years.

Would you sing for him if I have my life to live over?