Lyra

Lyra, "The Lyre", is one of the Silver Keys' Celestial Spirit that is owned by Lucy Heartfilia.

Appearance
Lyra appears to be a young girl. She has waist length hair that curls at the end, and wears a pink bonnet on top of her head. Her cheeks have round blush marks, and she wears a long dress with heart prints by her waist. She wears leather shoes as well. She has small white wings and a large harp on her back.

Personality
She is a very happy spirit, especially when she is summoned. However, Lucy states that she can only be summoned for three days per month. She is also very knowledgeable about Magic, as seen when she explains what Moon Drip is.

Galuna Island arc
Lyra appears after Lucy summons her to lighten everyone's mood. As soon as she is summoned she becomes ecstatic and politely complains about never being summoned. She goes on to sing a song that makes Natsu Dragneel and Happy happy, but her song causes Gray Fullbuster to cry, making her stop singing.

When a ray of light suddenly rains down on Deliora, everyone goes to the top of the ruins to see the moon ritual taking place. Here, Lyra explains the power of "Moon Drip" and it's effects on the ice sealing Deliora. After the fight with Reitei Lyon begins, Lyra leaves.

Loke arc
Lyra is later summoned to sing musical songs for the play Erza Scarlet forced Team Natsu to do. She is summoned again with the rest of Lucy's Spirits to persuade the Celestial Spirit King to spare Loke's life.

Grand Magic Games arc
Lyra celebrates the return of Lucy and her friends from Tenrou Island when Virgo brings them to the Celestial Spirit World. During the celebration Lyra plays her harp singing about friends and bonds. This song reminds Lucy about her father, which causes her to break into tears and thank everybody. After the celebration, Lyra sees Lucy and her friends off with the rest of Lucy's Spirits.

Magic and Abilities
She has no combat abilities seeing as she's merely a performance Celestial Spirit. She is a very good singer and a harp player. Her songs themselves can also embody the heart and feelings of the people who are listening, as was the case with Gray.

Expert harp playing:As the lyre, Lyra is an expert of harp playing.

Immortality: As a Celestial Spirit, Lyra cannot die, unless she is forced to stay in the Human World somehow.

Equipment
Harp:Lyra uses this for her performances.

Trivia

 * She apparently complains to Lucy about how she doesn't summon her often, though Lyra is reminded that Lucy is merely keeping their contract in mind.
 * During the Loke arc in which Lucy, Natsu, Erza, and Happy participated in a theater mission, Lyra was summoned due to her singing powers. However, by the end of the mission, it became clear that the group had to perform three times a day which would either imply that Lucy had altered Lyra's contract of "three appearances a month", or she was kept in the human world for a week's time.
 * Despite the fact that she's based from the constellation "Lyra the Lyre" she uses a harp instead of a lyre.

Video Games
Lyra appears as a support character in DS Game Fairy Tail Gekitotsu! Kardia Daiseidou.