This is REAL music, a true piece of art. You will want to sing along to songs that before you never new you liked. At the same time it challenges your perception of what is good music.
Bill's "It was a very good year is a fine comic interlude", but
personally I much prefered Nimmoy's deep flat singing voice to Shatner's ham acting style. With 18 Nimmoy tracks I'm not complaining though.
Its said Mozart never wrote a wrong note, and that's why this is so, so much better than Mozart.
Nimmoy and Shatner don't shy away for letting loose and enjoying themselves and its positively infectious. There is plenty of invention and variation throughout.
I recommend this to all fun-loving adults.
... and if you're not a fun loving person, then sit back, keep listening and you soon will be.