Heard this on the radio earlier today and was thrown for a minute. Sounds like McCartney... no it doesn't... yes it does... cue debate with my dad as to whether Paul would release such a delicate ballad with banjo picking and beautiful string arrangement to the fore (of course he would, I hear you say). Turns out he guested on Steve Martin's last album, and it completely passed me by (ahem). I think it's lovely.

Steve Martin feat. Paul McCartney - Best Love