Like the John Coltrane Ballads album (also strongly recommended) this album is a rare example of a jazz album made up exclusively of ballads.
Evans is one of the few musicians who could carry it off - the tunes have a consistent mood and dynamics, but the intelligence and intensity of Evan's playing avoids the blandness which might have affected a lesser artist. The overall effect is also helped by the fact that the album was recorded together with the faster, more swinging album "How my heart sings", with the trio alternating the ballads on "Moonbeams" with the more straight-ahead tunes on "How my heart sings".
"Polkadots and moonbeams" is a particular favourite.
Evans is also one of those artists where, if you like one album, you'll probably like almost anything he's produced, particularly anything up to 1965. For starters, check out "Sunday at the Village Vanguard", "Waltz for Debby" or "Trio 64", not forgetting Evan's major role in the landmark Miles Davis album "Kind of Blue".