ENHYPEN gives hints at witty new song ”Loose”… what's the real melody?

The group ENHYPEN has raised the expectations of global fans with a hint at their witty new song "Loose," fitting for April Fool's Day.
On the 1st, ENHYPEN posted a video on the team's official SNS giving a hint at their digital single "Loose."
In the video, the members of "ENHYPEN" appear in order and hum a certain melody. Only one of them sings "Loos
The remaining six were imaginary. Their brilliant ad-libs and dazzling gestures brought unexpected laughter.
Prior to this, management office BELIFT LAB commented on "Loose" as "a trendy pop sound and a sexy
In addition, the seven melodies sung by each member of ENHYPEN have piqued fans' curiosity, and many are wondering which song is the real one.
ENHYPEN will release "Loose" at 1 p.m. on the 4th (Korean time), and on the 10th (local time), it will be broadcast on the American ABC channel "
They will appear on "Jimmy Kimmel Live!" on the 12th and 19th at the largest music festival in the United States, "Concert Hall."
Coachella Valley Music and Arts Festival
Before appearing at the "Festival," he also appeared on a popular late-night talk show in the area to heighten the atmosphere of the festival.
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