Jazz Swing Low Sweet Chariot

The chord for the whole of this tune is A major (see Guitar-Basic-Chord-A), and the filler notes to go with this chord come from the notes of the A major scale. The tune is found on the page Guitar Lyric A Chord

Note that the melody line contains notes which are in the scale of A, and also that the principal notes are A, C# and E. It should be played with a swing to it. If you give all the quavers their strict half-beat values the whole thing will sound dead.