mysterious traveller is the fourth studio album by the jazz ensemble weather report and was released in 1974. this was their final recording with founding bassist miroslav vitouš, who left due to creative differences. vitouš was replaced by alphonso johnson. another addition to the line-up is drummer ishmael wilburn. greg errico was the drummer for the tour between the previously released "sweetnighter" and this album, but declined an invitation to be a permanent member of the band.