Choba B CCCP is essentially a 50-50 mixed bag of songs: half of them in which it was apt for McCartney to perform, the other half he should have left alone. Among his best are Kansas City, Lucille, Don't Get Around Much Anymore, and the slow rendition of Summertime, which is so much better than the cheesy fast version that you hear on oldies radio stations. Midnight Special is also decent, where McCartney is in his aloof, easygoing mode.
The rest of the cuts simply do not cut it. McCartney, as you would tell if you listened to his own remake of Ain't That a Shame , is no Fats Domino. He's Paul McCartney! And Ain't That a Shame is just not a song for Paul McCartney to perform, in the same sense that Love Story is just not a Stephen King novel. In other words, there are good formats that, despite being good, can be disasatrous if you try to make them compatible with the skills of certain gifted and talented artists.
All in all, some remakes of 1950's classics belong to the McCartney catalog. Some do not. Choba B CCCP is decent, but his similarly themed release that would be recorded a decade later, namely Run Devil Run, is better.