"All I can remember is how we felt at the time," the oldest of the participants says in a soft but self-assured voice.

A loud, self-assured voice became audible now at the opening to the alley: "Here, here, here, here, here!"

The normally self-assured, smooth voice was worried.

Rachel's self-assured voice was very clear.

I only invested in real estate, not stock," he once said in his deep, self-assured voice, "and I really never sold.

Then, in the kind of suavely self-assured voice that makes you check for your wallet, he greeted each journalist: "How you doing today?"

"I wanted to knock, but silk doesn't do well with that sort of thing," a quiet, self-assured voice said from the tent entrance.

A clear, self-assured voice.

Now her judgments struck him as too harsh, her voice too self-assured.

Both also turned in strong sets, with the 19-year-old Ms. Apple's awkward and immature stage presence countered by her rich, self-assured voice and piano-playing.