A song themed around letters. A popular letter song.
Compared to the past, we write and receive letters far less often nowadays.
Still, letters have their own charm, and I think they’re a wonderful way to convey your feelings.
Precisely because of the times we live in, there may be many things that come across better in a letter.
This time, I’ll be introducing songs with the theme of “letters.”
There are many kinds of letters—thank-you notes, love letters, letters to your future self—so there are all sorts of “letter songs.”
Just hearing the word “letter” makes it feel like something filled with heartfelt emotions, doesn’t it?
Since there are letter songs for many different situations, I hope you’ll find a favorite.
- Popular love-letter songs that deliver your feelings. Timeless classics that touch the heart.
- [Tearjerker] Songs that make your heart tremble with tears & moving tracks with lyrics that touch the soul
- Masterpieces that sing of love. Recommended popular songs.
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- [Thank You] A classic song expressing gratitude to one’s parents. A number loved across generations.
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- [Songs with Great Lyrics] Masterpieces you’ll want to listen to while savoring the words that resonate with your heart
- Songs with strong messages. Classic J-Pop masterpieces and recommended popular tracks.
- Masterpieces with the theme of “tears.” A roundup of moving tracks that tug at the heartstrings.
- [J-Pop] A Collection of Unrequited Love Songs That Stay Close to Your Heart
Songs with a letter motif. Popular letter songs (21–30)
Love LetterMAZZEL
MAZZEL is a talented dance and vocal group that debuted from BMSG.
For this song, member EIKI co-wrote the lyrics with SKY-HI, creating it as a “true love letter” addressed to each member.
The lyrics affirm every past setback and pain while expressing gratitude to their teammates, filling the song with a warmth that tightens your chest each time you listen.
It’s included on their first album, Parade, released in March 2024, and it moved audiences when performed on their solo tour.
It’s a track that gently stays by your side not only when you want to express your honest feelings to a partner, but also on nights when you want to be kind to yourself.
That feeling of lightness in your heart after the song ends is truly wonderful, isn’t it?
A lifetime’s worth of love lettersUsotsuki
Usotsuki, who deliver down-to-earth music as a “royal-road uta-mono band,” included this song as the title track on their mini album “Isshobun no Love Letter,” released in July 2016.
If love has an expiration date, then you can fall in love over and over and tell your feelings each time.
Written with that reversal of perspective, this message of a lifelong vow makes it a perfect song for special moments like proposals and weddings.
The music video features actor Ikkei Watanabe and became a hot topic for its moving, drama-style story.
It’s a warm, heart-stirring love song that reminds you of the happiness of meeting someone special and growing old together.
A song themed around letters. Popular letter songs (31–40)
Love Letter (feat. Sonoko Inoue)haji→
A winter song featuring singer-songwriter entertainer Hajime→ from Sendai, Miyagi, and Sonoko Inoue.
Its unique charm lies in the perspective of expressing feelings for a destined partner they haven’t met yet.
The conversational flow of the male part blends with the down-to-earth Kansai-dialect lyrics of the female part, creating a world that’s both wistful and warm.
Released in December 2017 as the lead track from the album “Collab de Haji Best.” The music video, featuring actor Rikuu Hagiwara and others, drew attention for its movie-like, story-driven production.
Perfect for long winter nights and that season when you yearn for connection.
A must-listen for those dreaming of a love yet to come or hoping to rediscover a pure, heartfelt feeling.
Love letternatsuiro matsuri
This track, which unveils a dark and luscious worldview that overturns her previously cheerful and bright image, is Natsuiro Matsuri’s digital single released in March 2025.
Set to a piano-and-synth sound crafted by Naisho no Pierce, it portrays a deep affection—bordering on possessiveness and obsession—that spills out precisely because it’s written like a letter.
Sung by Natsuiro Matsuri, the piece features a striking vocal performance where cuteness and madness coexist, revealing a different side of her compared to solo songs like “HiHi High Tension!” Conveying an earnest desire to know everything about the other person, it’s a perfect song to savor on nights when you want a more provocative love song than usual.
LOVE LETTERMakihara Noriyuki
Do you know the hidden gem by Noriyuki Makihara that portrays a faint, letter-bound first love? Centered around an undelivered love letter, it delicately captures the emotions of a protagonist seeing off someone dear who is leaving for a distant job.
The imagery—twilight at the station and scenes along the tracks—feels so vivid it tightens the listener’s chest with a poignant ache.
The song was included on the album UNDERWEAR, released in October 1996, and was later used as the theme for NTT East’s corporate commercial “Mother,” featuring Yui Aragaki.
This piece rekindles the unspoken kindness we couldn’t put into words and the bittersweet memories of youth.
It’s a song to savor, especially for those who’ve experienced a springtime parting or who carry unspoken feelings in their hearts.
Love letterShirahane Reiko
This work is a cover of a punk rock classic, rendered with a delicacy unique to a female vocalist.
Unlike the raw, unbridled passion of the original, the soft, translucent voice gently wraps around the earnest wishes entrusted to a letter.
Written in the first person as “I,” the words addressed to a lover who is no longer by one’s side blend overflowing lingering attachment with deep affection, tightening the chest with every listen.
Released as a single in February 2005, it also became familiar as the ending theme for the TV Asahi drama “Tokumei Kakarichō Tadano Hitoshi.” Reiko Shiraha’s vocals added a profound sense of wistfulness to the drama’s world.
When you’re carrying feelings that won’t reach their destination, or when you want to quietly shed tears alone at night, this song will gently stay by your heart.
LAST LOVE LETTERNoda Yojiro
This is a heartwarming love song written and composed solo by Yojiro Noda, best known as the frontman of RADWIMPS.
The theme—a letter addressed to a future partner yet to be met—is particularly striking, expressing overflowing love for the person they’ll one day encounter and a firm resolve to overcome hardships together.
Released in advance in July 2024, the track holds a special place as the final number on the album “WONDER BOY’S AKUMU CLUB.” It was also performed as the last song of the main set at his one-man live in September 2024, captivating many fans and becoming a hot topic.
It’s a song that offers hope to anyone wishing to meet their destined person.