(song of wisdom), the title of thirteen Psalms 32,45,44,45,52-55,74,78,68,69,142 Ewald regards (Psalms 47:7) (Authorized Version, "sing ye praises with understanding; " Heb. maschil) as the key to the meaning of maschil, which in his opinion is a musical term denoting a melody requiring great skill in its execution.
Smith’s Bible Dictionary
Maschil
Smith’s Bible Dictionary, William Smith (1863). Public domain, from the CrossWire SWORD module.