This one, as you can see from the cover blurb, has everything you need. The story itself is pure pulp, with corpses piling up at an amazing rate. The unnamed first-person private-eye narrator is given a mysterious cassette tape. Someone's killing to get it because although to the p. i. it sounds like a song, it has the power to cloud most men's minds. Most women's, too. Whoever has the tape can control the world. Or something. Not a great story, but it's entertaining enough for what it is. As the inside copy says, "Why pay more? Why shop around? After you've read one, you won't mind the others."
At one time I thought Ron Goulart might have written these books. I have no idea why I thought that.
Update: Please read the comments on this post. Todd Mason has unearthed all sorts of fascinating facts about the No-Frills Books!