This is a voice synthesis software released by 1st PLACE.
She is called IA.
Lia’s voice was used for the voicebank.
The character design was handled by the manga artist Aka Akasaka.
Live performances leveraging the official 3D model are being held in various places.
This time, we researched popular songs featuring her, ranked by popularity!
Please take a look.
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IA's Popular Song Rankings [2025]
Night Sky Patrol of TomorrowOrangestar feat. IA1rank/position

A signature song by Orangestar, known as a Vocaloid producer, is drawing attention as a masterpiece that captures listeners’ hearts and won’t let go.
The official video has racked up astonishing view counts, and many comments say it’s a “divine track that makes your heart tremble when you listen.” The lyrics interweave poignancy and strength, and the delicate piano melody leaves a lasting impression.
Through the figure of a boy gazing up at the night sky and facing himself, the song depicts both anxiety and hope for the future.
When performing it on piano, the key is to carefully express the ebb and flow of emotion.
This song is trending on social media—why not try playing it yourself?
HenceforthOrangestar feat. IA2rank/position

Speaking of Orangestar, he’s a Vocaloid producer popular even among elementary school students, also known as the composer of the classic track Asu no Yozora Shoukaihan.
The song Henceforth is a refreshing summer tune that Orangestar released in May 2020.
Amazingly, it surpassed one million views just four days after the music video was released—a testament to Orangestar’s popularity and skill.
The lyrics portray the sorrow of parting with someone important, yet convey a forward-looking resolve to keep walking on, even alone.
SuperheroGuiano feat.IA3rank/position

This song by Guiano has a mid-tempo groove that’s easy to get into, and just listening to it really gets you hyped, doesn’t it? The lyrics are a series of “I want to try ___” wishes, and because they’re so far removed from everyday life, they’re perfect for a lyric-prank.
The person you prank will probably be baffled, like, “What are you even saying??” It might also be fun to tweak parts of the lyrics and weave in your own wishes with lines like “I want to try ___.”
This GameKonomi Suzuki × IA4rank/position

“This Game,” the opening theme of the anime No Game No Life, which depicts a meteoric rise through the world of gaming, is a track where band-driven sound meets delicate piano.
Released by Konomi Suzuki in 2014, it lets you fully savor her beautiful vocals.
In this Konomi Suzuki × IA version, a bold EDM arrangement enhances the song’s inherent power.
IA’s fragile yet beautiful singing intertwines brilliantly with the intense electronic sound!
RokuberuHoneyWorks feat.IA5rank/position

This is a Vocaloid song released in 2012 by HoneyWorks, also known for pieces like “Good Morning on Friday” used in news programs.
Told from the perspective of a pet cat who hasn’t realized it’s a cat, the slightly sad lyrics and gentle music beautifully complement each other, making it a highly popular track.
Twilight Cicada DiaryMafumafu feat. IA6rank/position

This is a 2012 song released by Mafumafu, a singer who posts videos of themselves singing VOCALOID songs online, presented as an original composition.
Many listeners have become hooked on its quintessentially VOCALOID style—a rapid-fire, fast-tempo track driven by electronic sounds—and it has racked up a high number of plays.
My Soul,Your Beats!Lia×IA7rank/position

The grand arrangement gives a sense that the story is about to begin.
“My Soul, Your Beats!”, released by Lia in 2010, is a rock-driven, powerful track featured in the anime Angel Beats!.
In this version by Lia × IA, the delicate piano phrases feel even more touching.
Since IA’s voicebank is based on Lia’s voice data, it’s only natural that the match feels so perfect.