I have been a fan of Mark Knopfler since forever and have recently been enjoying a relatively new album he has put out with Emmylou Harris called 'All the Roadrunning'. If you like laid back country rock then I recommend this - great to listen to on the road or relaxing with a cold pink lemonade at the end of a busy day

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Sparks/MM also has a number of other Knopfler albums such as 'The Ragpicker's Dream' and 'Sailing to Philadelphia' that are full of mellow and laid back R&B/folk-rock/country-rock style songs.
I would be interested to hear of any other recommends for this style of music.