This is a sample of singing Rejoice 37 to a 3/4 Irish sounding tune by Ithaca Praise. The melody is simple for singing, so made more exciting by having two key changes - from E to F and then from F to G. The chords of the first verse are A - E - B - B A - E - B - B - F#m - C#m - E - B - Asus2 - E - B - B - Asus2 - E - B - B. The words are taken from the Scottish Psalter 1650. To introduce the song, one could emphasis the way Christ has fulfilled the righteous requirements of God and through Christ's mercy, us believers now stand justified (declared not guilty). For this reason, we sing a new song and use the art of music to please God and rejoice in God.