Once upon a time, radio was a participation sport. Call Keener and there was a good chance you might become part of the show.

And that’s how it was this week in 1967 when the Parliaments “I Wanna Testify” was climbing the charts. Scott Regen was at the height of his Keener fame, with a monster audience joining in the fun. He invited listeners to call in and “testify” what their boyfriend / girlfriend’s love had done for them. And boy, did they.

Here’s an aircheck that includes a whole bunch of Detroiters Testifiers. Were you one of them?