Two by Four, released in 1989 by the EmArcy label, is a collection of duets by jazz acoustic bassist Marc Johnson.

His duet partners include vibraphonist Gary Burton and harmonica virtuoso Toots Thielemans.

This album is a series of duets led by Marc Johnson, who served with distinction as the bassist in Bill Evans' last trio.

Here Two By Four Harmonica player extraordinaire Toots Thielemans joins Johnson for a beautifully strutting take of "Killer Joe," afollowed by an amazingly soft and subtle take of "Spartacus Love Theme" by Alex North, a favorite of Evans that Johnson never got the opportunity to play with him.

[1] The Allmusic review by Ken Dryden awarded the album 4½ stars stating "This series of duets featuring bassist Marc Johnson with different guests could be considered a tribute to Bill Evans, because it includes such a number of songs associated with the late pianist (though only one is an Evans composition)".