Answering Machine - Male Trio

"I'm Morley Safer." "I'm Harry Reasoner." "And I'm Fred." "We're not home; leave a message." 

Answering Machine - Camptown Races

"Camptown Races": I can't come to the telephone; doo-dah, doo-dah. Leave your message when you hear the tone; oh, de doo-dah day. Might be gone all night... Might be gone all day... So leave a message when you hear the tone. I'll call you back someday... 

Answering Machine - Yesterday's Ending

Hello, this is Marlin's answering machine reminding you that yesterday was the last day of the previous period of your life. After the beep you can tell me how it was, or leave some other, informative message. Thanks.