The knife that arrived two months late — aespa's 'Switchblade'

A folded knife doesn't look like a knife. It's a small object that fits in a pocket.

What's dangerous isn't the blade but the motion of opening it. That one sound, when the same object becomes something else in an instant.

The song that got a video last week is named after that object.

A gap of two months

This isn't a new song.

Item	Detail
Artist	aespa
Song	'Switchblade (Feat. Ty Dolla $ign)'
Track release	May 28 (from the 2nd album 'LEMONADE')
Music video	August 4
Featuring	Ty Dolla $ign
Gap	About two months

Attaching a video to an album track late is a method used when a promotion cycle runs long. It lets you bring the album out once more after the title-track run ends.

Two months isn't a short gap, though. By then everyone who was going to hear the song has heard it. So a video like this doesn't work to introduce the song; it works to make an already-known song be seen again.

Putting a picture on a song you already know

A video attached to a first listen and a video attached to a song you've had for two months do different jobs.

On a first listen the video builds the song's impression. Which scenes you heard it with become the memory of it. But with a song you've played many times, the listener already has their own picture — a commute, a room, whatever place the song was attached to.

A late video pushes another picture into that spot. Done well, the song widens; done badly, it erases the scene that was already there. Which one it becomes depends on whether the video tries to explain the song or stands beside it.

The song that was folded

A switchblade is a knife whose blade springs out at the press of a switch. The rest of the time it stays folded.

Lay that title over the position of an album track and it gets interesting. It sat folded inside the album for two months, and opened the moment a video was attached.

The song itself is unchanged, of course. What came out in May and what plays in August are the same sound. What changed are the conditions around it — that it stepped out of the title track's shade and now stands alone.

That's usually how an album track gets its name late. Not because the song changed, but because a finger appeared to point at it.

Tonight, try it like this

First play the song without the video. If you heard it back in May, bring up where you were then.

Then put the video on. What remains on a second viewing is this video's test — whether it erased the scene that was there, or set one beside it.

The song that lasts longest from an album usually isn't the title track. The title track holds the sound of its moment best, and an album track is less tied to that moment. What's less tied lasts longer.

It took two months for the folded thing to open. That sound can be called this. 'Switchblade'.