Missing Note

The melody was triumphant,
but would sound majestic with the missing key,
The house was pretty,
but would be beautiful with the missing touch,
The painting is rich,
but would be treasure with the missing stroke,
The song was sung melodiously,
but would be joyous with the missing pitch,
The moment is memorable,
but will be valuable with the missing piece,
The day was nice,
but would be perfect with the missing person.