A psalmist is a composer or author of a psalm. Musicians or lyricists are often referred to as psalmists.
Positive: Dreaming of a psalmist could represent one who has the fear and love of God in their heart. It could also indicate one who can minister to other people.
Negative: In a dream, seeing a psalmist could indicate that one may have an underlying spirit of pride.
(Psalm 96; Psalm 92; Psalm 27; Psalm 59).