Với giai điệu dance pop kết hợp afrobeats đầy sôi nổi và bắt tai, "1&Only" khắc họa một mối quan hệ lãng mạn nồng cháy và tràn đầy đam mê. Nhân vật chính bị thu hút bởi đối phương và không thể nào chờ đợi thêm để được ở bên người đó, nguyện làm mọi cách để trở thành chỗ dựa an toàn duy nhất trên đời cho người đó. Bài hát cũng làm nổi bật thông điệp về việc sống trọn vẹn với hiện tại và buông bỏ những lo lắng để tận hưởng niềm vui.

Được thể hiện bởi các chàng trai XLOV, "1&Only" được ra mắt chính thức vào ngày 13 tháng 6 năm 2025 cùng một music video. Đây là bài hát chủ đề nằm trong single album thứ hai của nhóm có tên "I One", với tổng cộng sáu track nhạc. Ngoài ca khúc chủ đề, tracklist còn có hai bản b-side khác là "1 of LOV" và "BIZNESS", cùng với phiên bản không lời cho các track nhạc.


Yeah, yeah, I need ya

Baby, 너를 위해, 불타오른 순간

Can't wait for too much longer

Baby, I'm a lover

Ooh, 느껴져 heart beat

'Cause I know you're the one

So let me know what you wanna do

Float away, so high up in the clouds

We're in the clouds now, mm-mm

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

가까이 time to fiesta

느껴봐 when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, 붙잡아 달려 난

No liеs, I'ma give it to you straight

Give me еnergy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

It doesn't even matter as long as we keep turning it up

Hahaha, we finna turn it up

Ah, Mona Lisa, Lisa

Call me Papi Chulo, Mamacita

Mixing you up like I'm serving margaritas

Muy fine si bonita chica

이뤄줄게 원했던 모든것

구름위로 올라가 take you go

Baby, you so fine, want you to myself

I don't want nobody else, ah

Float away, so high up in the clouds

We're in the clouds now, mm-mm

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

가까이 time to fiesta

느껴봐 when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, 붙잡아 달려 난

No lies, I'ma give it to you straight

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

It doesn't even matter as long as we keep turning it up

We keep turning up this party

Like it's a Friday night

Come on, baby, let's get started

'Cause I know what you like

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

가까이 time to fiesta

느껴봐 when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, 붙잡아 달려 난

No lies, I'ma give it to you straight

Give me energy

Energy

What you say?

Bombs and away

It doesn't even matter as long as we keep turning it up

Yeah, yeah, I need ya

Baby, neoreul wihae, bultaoreun sungan

Can't wait for too much longer

Baby, I'm a lover

Ooh, neukkyeojyeo heart beat

'Cause I know you're the one

So let me know what you wanna do

Float away, so high up in the clouds

We're in the clouds now, mm-mm

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

Gakkai time to fiesta

Neukkyeobwa when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, butjaba dallyeo nan

No lies, I'ma give it to you straight

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

It doesn't even matter as long as we keep turning it up

Ha-ha-ha, we finna turn it up

Ah, Mona Lisa, Lisa

Call me Papi Chulo, Mamacita

Mixing you up like I'm serving margaritas

Muy fine si bonita chica

Irwojulge wonhaetdeon modeun geot

Gureumwiro ollaga take you go

Baby, you so fine, want you to myself

I don't want nobody else, ah

Float away, so high up in the clouds

We're in the clouds now, mm-mm

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

Gakkai time to fiesta

Neukkyeobwa when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, butjaba dallyeo nan

No lies, I'ma give it to you straight

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

It doesn't even matter as long as we keep turning it up

We keep turning up this party

Like it's a Friday night

Come on, baby, let's get started

'Cause I know what you like

Hmm, only, only

I'm tryna be your one and only

Call me, so call me, call me

Whenever you're feeling lonely

Gakkai time to fiesta

Neukkyeobwa when I caress your body

Move to the rhythm (Body)

Move your feet to the rhythm

Give me energy (Energy)

Energy (Energy)

What you say? (What you say)

Bombs and away (Bombs and away)

Burning in your heart, butjaba dallyeo nan

No lies, I'ma give it to you straight

Give me energy, energy

What you say? Bombs and away

It doesn't even matter as long as we keep turning it upon