Anthony Tempesta

The World Trade Center had a wealth of family history: Anthony Tempesta, had proposed to his wife, Ana, at Windows on the World. And Mr. Tempesta, 38, a broker, and his mother worked on the same floor at Cantor Fitzgerald, but she did not have to start work until 9 a.m., and he was in at 7:30 a.m.

Growing up in Staten Island, Mr. Tempesta learned how to play the bass guitar when he was just out of high school, by taking two trains and a ferry to classes in Harlem. One of his favorite audiences? His daughter, Amanda, 7, and her friends. (He also had a son, Matthew, 10.) He had to reschedule one of Amanda's sleepovers, because he had to attend his brother Michael's bachelor party. "Anthony explained he had to be at the sleepover because he was the entertainment," Clifford Tempesta said at his son's memorial service.

The family decided Michael's wedding, Sept. 23, should continue as planned. "He wouldn't want to be like a party pooper," Clifford Tempesta said. And at the end of his eulogy, he said, "I know Anthony would like to hear one last round of applause."