"Luna's Reply", is a My Little Pony: Friendship Is Magic fan-made Answer Song to Lullaby for a Princess, with lyrics by Swords-and-Bandages (adapted from ponyphonic's lyrics and tune to Lullaby for a Princess) and sung by msikarishipper.
It's Luna's reply to Celestia's lullaby, where she expresses her sorrow about having become Nightmare Moon and reassures her sister that she understands why she was banished to the moon.
An animatic for it was made by Zhyreb and a fully animated video was made by Pokemon-Fireevee.
See also Luna's Soliloquy, a song which instead follows Nightmare Moon's perspective on her banishment, and The Moon Rises, a song which follows Luna's transformation into Nightmare Moon.
Luna's Reply contains examples of:
- Answer Song: As stated above, it is one to Lullaby for a Princess.
- The Chains of Commanding: Invoked by Luna.Such is the weight of the crown that we wear, sister,
Duties we always uphold;
May you forgive me that foolishness mine
And live on with no burden upon your soul - Distant Duet: Becomes this when combined with Lullaby for a Princess, which has happened.
- My God, What Have I Done?: Luna expresses this feeling from early on in the song.
- Recursive Fanfiction: Like Luna's Soliloquy, it's a musical version of the trope, as it's a fan-made Answer Song to Lullaby for a Princess.
- Recycled Lyrics: A considerable portion of the lyrics are taken from Lullaby for a Princess. As with Luna's Soliloquy, it helps to establish the parallels with the song it answers to, although in a different way than Luna's Soliloquy.
- Solo Duet: Becomes this (in a sense) when combined with Luna's Soliloquy, which, like with Lullaby for a Princess, has happened.
- Villainous Lament: A good part of the song is about Luna expressing her regrets for the harm she caused.