Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord;
Note 32 at Eph 5:19: The Greek word that was translated "songs" here is "ODE." This Greek word has been transliterated into the English language, and "ode" is still used to denote "a lyric poem usually marked by exaltation of feeling and style" (Merriam-Webster Dictionary). The word "songs," as used here, is speaking of uplifting songs that exalt the Lord. The connection with the word "spiritual" is specifying non-carnal, or songs that deal with spiritual truths. The Greek word used for "hymns" comes from the word that means "to celebrate," and the word for "psalms" is specifying a poem set to music and/or the book of Psalms.
Therefore, this verse is instructing us to praise the Lord with songs from the Scripture, hymns of a traditional nature, and other songs about spiritual things that uplift the Lord.
Note 33 at Eph 5:19: The English phrase "making melody" was translated from the Greek word "PSALLO," and this Greek word means "to twitch or twang, i.e. to play on a stringed instrument" (Strong's Concordance). This symbolism is probably where we get the idea of striking a chord in someone's heart. When we worship the Lord from our hearts, it is like playing a musical instrument to the Lord. Regardless of our physical ability to play an instrument, all of us can make melody in our hearts to the Lord.