GOT7's leader Jay B has just turned 28 years old (29 years old in Korean age) today, January 6, and birthday greetings from fans all around the world are pouring in across various social media platforms the moment it struck midnight.

While many know the idol as Jay B, JB, and Jaebeom, did you know that he also produces songs under his other name, "Defsoul" or "Def"? In honor of Jay B's birthday, here are 10 songs that the GOT7 member has produced under his moniker!

About GOT7 Jay B's Moniker 'Def.'

The name Def. or Defsoul first came back when Jay B was still a b-boy, with "def" meaning "cool" and "soul" being inspired by his favorite musician, Musiq Soulchild. According to Jay B, the biggest difference when it comes to producing as Def. is that his music is non-mainstream and is something that he wants to do, without considering if people will listen to it.

With that, here are 10 songs Jay B produced as Def.!

1. Def. - 'HONEY'

Recently in October 2021, Def. dropped "HONEY," a slow R&B track that features his soulful and sweet like honey voice. The song was written and composed by Def., with Rose in Peace taking part in composing and arranging "HONEY."

2. Def. - 'Holic'

Def. dropped "Holic" back in December 2016 as part of his first mixtape "1/? vol. 1." The song is a hip-hop and R&B mix, and was written and composed by Def., with Mirror Boy taking part in the producing.

3. Def. - 'CHANNEL' featuring jeebanoff and JOMALXNE

As part of his second mixtape "1/? vol. 2," Def. collaborated with jeebanoff and JOMALXNE for the track "CHANNEL." The three artists took part in producing the song along with Royal Dive, and was originally released in January 2018 through Def.'s Soundcloud account.

4. Def. - 'Don't Care'

In November 2018, Def. dropped his third mixtape "1/? vol. 3," which includes the song "Don't Care." Rose in Peace also took part in producing the song, while Def. produced, composed, and wrote the lyrics.

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5. Offshore - 'SURFIN'' feat. Def., JOMALXNE

As Def., he also writes for the Offshore crew. In 2019, he wrote and produced "SURFIN'," as well as feature in it along with JOMALXNE as part of the album "Scene #1."

6. Def. - 'DEEPER'

In 2019, Def. released his fourth mixtape "1/? vol. 4," which includes "DEEPER," a soulful and slow track showcasing Def.'s sensual vocals. For this song, Nomad took part in production.

7. Wavycake and Ovus - 'Dream' feat. Def.

In 2020, Def. featured in Wavycake and Ovus' track "Dream," in which Def. had participated in the song's writing and producing.

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8. $ün - 'In December (Sad Night)' feat. Def.

Def. also wrote and produced for $ün's track "In December (Sad Night)" as part of the latter's "White" album. The song features a gentle melody, showing off Def.'s gentle side accompanied by somber lyrics.

9. Offshore - 'Call Me' feat. Def. and JOMALXNE

For Offshore's third album "Scene #3," Def. produced the song "Call Me" in 2021. Alongside Def., JOMALXNE worked with him for the song's lyrics, while they also worked with Rose in Peace for the producing.

10. Def. and Fudasca - 'Is it a Dream?'

Def.'s most recent release is his collaboration with Fudasca for the track "Is it a Dream?" back in 2021. The non-album single also had Simone Eleuteri working on the lyrics, while Fudasca also worked on producing alongside Def.

Which is your favorite track by Def.?

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Written by Robyn Joan