Printemps performs songs about longing very, very well:

• "Love Marginal" is a song about unrequited love which sounds as beautiful as it is heartbreaking.
• "UNBALANCED LOVE" from their second single is another song about unrequited love and is just as wistful.
• "Eien Friends" is a cute, bubbly and happy song, notable for its catchy chorus, about a friendship that is taken for granted and might not be forever.
• "Nightingale Love Song" from the third single is distilled 80's J-Pop goodness, and is very inspired by the work of Vince DiCola.
• "NO EXIT ORION" continues the trend begun by the previously mentioned songs. It also sounds a lot better in the Final Live than its studio version, and is notable for breaking the usual image of Printemps with its Yandere-like lyrics.

BiBi boasts a wide variety of songs, ranging from J-pop to ballad:

• "Diamond Princess no Yuuutsu" is overshadowed by their next singles, but is still a groovy song on its own.
• "Cutie Panther", their second single, is a spiritual successor to the Cutey Honey theme song, bringing it up to the present.
• "Natsu, Owaranai de", is smooth, somber, and showcases the power of Nanjolno's voice very well.
• "Fuyu ga Kureta Yokan" is atypical of the usual energetic and upbeat songs BiBi is known for as it's a slow, somber winter love song. The last chorus stands out with its duality of feelings: Nanjolno and Pile's dramatic and uplifting delivery contrasts well with Soramaru's monotonic and somber delivery in the background, evoking bittersweet feelings to the listener.
• "Sakkaku CROSSROADS" is everything awesome about J-Pop in the 90s, topped off with Pile's amazing solos.
• "PSYCHIC FIRE" is another great song to drift race to (see "Beat in Angel") and also contains a lot of references to the members' quirks and catchphrases.

lily white has songs that either sound reminiscent of older Japanese music or soft and relaxing (and most of the time, it's both):

• "Binetsu Kara Mystery" is an exhibition of the unit's vocal harmonies. Umi's solo in particular stands out.
• "Aki no Anata no Sora Tooku" is an example of the aforementioned Nostalgia Filter, resembling something from the 80s.
• "Shunjou Romantic" is Rin's proof that she has continued to evolve from "Love Wing Bell".

While not as beloved as the singles, Yoshiaki Fujisawa's upbeat and whimsical musical score is arguably the beating heart that drives the soul of the story.

• "Hajimari No Asa" (The Morning Of The First Day), the positive, heartwarming and inspirational main theme and anthem of the first series. It fills your heart with the courage to be brave and positive like Honoka, take on the world and be a hero just listening to it!!
• "Osanaki hi no Yuuhi" (Childhood Sunset), a gentle and nostalgic melody of friendship and belief in your childhood dreams that punctuates key emotional scenes of courage, reconciliation, faith, love and hope.
• "Zenkai no Love Live!" (Previously on Love Live!), the previous episode recap music of Love Live! School Idol Project, pumps you up in every episode.
• "Hanayo no Ketsui" (Hanayo's Decision), the theme that plays when Hanayo joins μ's, takes you on an emotional ride as it starts off calm and relaxing, then it changes by adding more instruments until it finally blossoms into a sweeping climax of emotions.
• "Kanashimi no Yoru" (Night of Sadness) is a bittersweet piece that plays when µ's cried their hearts out at that train station...