[dfwgator]

And also that music had to be engineered in such a manner that it sounded good on AM radio.

[Dr. Sivana]

And also that music had to be engineered in such a manner that it sounded good on AM radio.

Yup. Listen to the spartan sound of Buddy Holley and the Crickets, bass, guitar, drums, backup vocals and not too much of any one on most tracks.

Same would go with stand out singers who belted it like Del Shannon and Connie Francis.