From 2017, and their just released album Orange, please enjoy the fabulous Mona Lisa Twins and their new single "Waiting for the Waiter."
And yes, the mysterious Man in Black at the bar playing the familiar sounding blues harmonica is in fact former Lovin' Spoonful frontman (and personal hero of mine) John Sebastian.
Most of the Twins' stuff is considerably more Beatles influenced (their Fabs covers, like this one, are to die for...)
...and closer to the subject of this here blog, but "Waiter" does it for me anyway.
In the meantime, you can -- and should -- order Orange over at the Twins website HERE.