I'm guessing the Smith Brothers, Tom and Kevin Smith, perform(ed) together in nightclubs, as this is a self-produced album of covers of popular songs done in the style of the originals, plus look at the photo on the cover.
"We've played many different kinds of music," reads the back cover, and the album has covers of pop, country, and easy listening hits, a Gershwin medley, and a "Hora medley." So perhaps they played weddings as well. The sample track shows them at their best.
Mammas Don't Let Your Babies Grow Up to Be Cowboys
Come On Over (Youtube link)
Technics SL-7, Grado Blue, Pro-Ject Phono Box S, harman/kardon CDR-2.