You've written a new song for your band. Your rhythm guitar player says she loves the melody and the pulse, but the song needs more behind it. How will you set out to make her happy?

Adjust pitches and rhythm in the melody to make it more interesting.
Work with the meter and tempo of the song to bring it to life.
Add a chord accompaniment on guitar to create more background for the melody.
Increase the duration of the notes in the melody to make it last longer.