Main Songs
- Happy Happy Harmony, Lovelitchi's and Melodytchi's first song.
- Happy Happy Harmony, Happy Happy Birthday ver, made specially for Mametchi (Tamagotchi's Birthday) in episode 56.
- Happy Happy Harmony (special version), features vocals by Yumemitchi and Kiraritchi as well as additional music by the Kirakira Girls.
- Happy Heart, Lovelitchi's and Melodytchi's second song. It was used to replace Happy Happy Harmony in some parts of the anime for a short time; however, Happy Happy Harmony still remained the most common throughout the anime.
- Smile For Tomorrow, Lovelitchi's and Melodytchi's third song. It is based on the relationship of Melodytchi and her Melody Violin (My Friend).
- Smile For Tomorrow, Wedding ver, made specially for Lovemamalitchi and Lovepapalitchi to give them a wedding they deserved; their first one being so low on budget.
- Rainbow Melody, a song also featuring Pianitchi's smapi music and vocals. It is the newest song by Lovelin and Melodytchi, and the first one to be introduced in GO-GO Tamagotchi!.
Others Song
Songs that don't play a big role in the anime, and/or are not made together by Lovelitchi and Melodytchi.
- Every Lovely Violin, remade version of Lovely Day with Melodytchi's Violin played in the background. Song made by only Lovelitchi/Lovelin. This was the first song played by both Lovelitchi/Lovelin and Melodytchi.
- Lovely Melody (ラブリーメロディ Raburī Merodi) song which the Melody Charm makes when played. Lovelitchi and Melodytchi named it Lovely Melody.
Trivia
- Most of these songs appear on the Tamagotchi iD L Princess Spacy ver in the concert destination.
- Full versions of Happy Happy Harmony and Happy Heart were released on CD.
- The full version of Smile For Tomorrow first appeared in episode 121, all uninterrupted except for the ending where Joou Sama talks. An extended version is found on the Ready GO Hasha GO Daishu GO! Tamagotchi! CD.
- Rainbow Melody does not have a full version. This may be because it is too long to be an abridged version but too short to be a full version, compared to other songs by Lovelin and Melodytchi.
- The special version of Happy Happy Harmony first appear on CD and made its first anime appearance (in a slightly shorter version) in the final episode of GO-GO Tamagotchi!