I heard a song on the radio that I liked, and I thought the announcer said it was called "Air" by Mike Mills. When I went online to buy it, I discovered the SONG was "Mike Mills" by a group called Air, who turned out to be two French guys who record in Paris, but sing in French-accented English.
When I started listening to it, I fully expected that the only track I would like would be the one I had heard on the radio (which is what usually happens!) -- but imagine my delight in discovering that, not only is the whole recording a treasure, but there are several songs on it I had heard before and loved but hadn't known who the artist was.
There's the odd song like "Cruising on a Rocket" that is up-tempo, but most of the tracks are beautifully hypnotic. Their gentle voices combine with the floating, ethereal melodies to create an effect that is incredibly soothing and peaceful. After a stressful day, I just put it on, and tracks like "Cherry Blossom Girl" and "Universal Traveller" make all the cares of the world melt away.