What key is "Hollow" in?

"Hollow" by Stray Kids is in the key of C with a tempo of 106 BPM. Difficulty: medium.

Is "Hollow" easy to play on piano?

This arrangement is rated medium. It requires comfort with chord shapes and basic hand independence. Expect 1-2 weeks of regular practice for a confident performance.

Can I play "Hollow" without reading sheet music?

Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.

How long does it take to learn "Hollow" on piano?

2–4 weeks of consistent practice (20–30 min/day) for an intermediate player. Drill the tricky passages in isolation first.

Lyrics

(F)Me mo ku re zu ma e mi (E)te_ha shi tte ki ta Hi ki yo (A)se ra re ta you ni ko ko (G)ma de, ta da (F)Bo ku no buck et list ni wa (E)ta ku san no chek ku ga Na ze ka man zo ku de ki na i bo (G)ku wa Da re ka (F)o moi mi ta shi te ka (D)wa ki i ya shi te Tryin’ (A)ku ri ka e su_ko ta e mo na ku Don na ko (F)to ba mo ta ri nai do (D)u ka o ne ga i, mou I can’t take it no (A)more.

Su be te (F)da ki shi me ha shi tte mo why (A)do I feel hol low?

Don na ba (F)sho ni i te mo ko do ku ni (A)na ru I’m a lone.

Ai ga hit (F)su yo u na no ka hi to ri (A)de i ru ho do Mu ri (F)ya ri mi ta shi te mo I’m so (F)hol low, hol low, hol low, oh

(oh, na, na, na, na).

(F)Hol low, hol low, hol low, oh (ah).

(F)Hol low, hol low, hol low, oh

(oh, na, na, Mu ri (F)ya ri mi ta shi te mo I’m so...

Da re ka (F)o moi mi ta shi te ka (D)wa ki i ya shi te Tryin’ (A)ku ri ka e su_ko ta e mo na ku Don na ko (F)to ba mo ta ri nai do (D)u ka o ne ga i, mou I can’t take it no (A)more.

Su be te (F)da ki shi me ha shi tte mo why (A)do I feel hol low?

Don na ba (F)sho ni i te mo ko do ku ni (A)na ru I’m a lone.

Ai ga hit (F)su yo u na no ka hi to ri (A)de i ru ho do Mu ri (F)ya ri mi ta shi te mo I’m so ku mo no na ka no (E)moon

hi ka ri na i yo (E)ru

na mae mo nai ko ko (E)ro ah ah

so ra o sa may o (E)o may o o

Su be te te mo I’m so...

Hollow by Stray Kids

25 people have learned this song

Easy piano arrangement in the key of C at 106 BPM. Difficulty: medium. Color-coded notes — no sheet-reading skill required.

Teacher’s notes

This arrangement sits in a comfortable mid-tempo groove at 106 BPM, but don't let that fool you into coasting — the real challenge here is maintaining a steady, emotionally driven rhythm in your right hand while your left hand handles chord transitions that occasionally shift on off-beats.

You'll work with familiar pop chord shapes in C, but pay close attention to any minor chord voicings that color the verses; those transitions from major to minor can trip you up if your fingers aren't already hovering near the right keys.

Start hands-separate at about 70 BPM, focusing first on locking your left-hand chord changes to a metronome before layering in the melody.

Once you combine hands, loop the chorus separately — that's where the rhythmic density picks up and syncopation between hands tends to cause hesitation.

Use light sustain pedal, changing cleanly with each chord to avoid muddiness.

The most common stumble I see is rushing through the pre-chorus to "get to the good part," so deliberately slow that section down until it feels almost boring.

This is a fantastic piece for training your hands to stay rhythmically independent, a skill that will pay off in every pop arrangement you touch from here on.

About “Hollow”

What key is "Hollow" in?: "Hollow" by Stray Kids is in the key of C with a tempo of 106 BPM. Difficulty: medium.
Is "Hollow" easy to play on piano?: This arrangement is rated medium. It requires comfort with chord shapes and basic hand independence. Expect 1-2 weeks of regular practice for a confident performance.
Can I play "Hollow" without reading sheet music?: Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.
How long does it take to learn "Hollow" on piano?: 2–4 weeks of consistent practice (20–30 min/day) for an intermediate player. Drill the tricky passages in isolation first.