 The figured bass notation, described below, is a guide, but performers are also expected to use their musical judgment and the other instruments or voices (notably the lead melody and any accidentals that might be present in it) as a guide.Experienced players sometimes incorporate motives found in the other instrumental parts into their improvised chordal accompaniment.Modern editions of such music usually supply a realized keyboard part, fully written out in staff notation for a player, in place of improvisation.