This was one of Jack Benny's classic shows where Bing Crosby and George Burns as his guests. The premise of this show was Jack's reminiscing about those old days in vaudeville with his two partners Bing and George.
As we all know that just didn't happen, but it's certainly a nice thought to turn over in your minds. Bing and Jack knew each other and did guest appearances on each other's radio show. There's a famous one where Bing was involved as Jack was trying to find a replacement Oscar for the one that he filched and lost from Ronald Colman's house. This allowed for a series of guest stars who were Oscar winners every week.
As for George Burns, he and Jack were best friends for over 50 years. I still remember George breaking down at Jack's funeral in 1974. He and Bob Hope were supposed to deliver the eulogy jointly, but this was the only time in history Burns couldn't go on.
Bing of course got a solo number which old time radio fans will remember as the Barbasol Shaving Cream theme, Gypsy In My Soul. And Benny kept trying as he did his whole life to crack Burns up and never succeeded. Well.
Three show business immortals doing their thing, entertainment doesn't get better than this.