- 花澤香菜 - I wonder why...
- 花澤香菜 - I wonder why…
- 花澤香菜 - I wonder why…
- Ann One - I Wonder Why...
- Ke$u$ - I Wonder Why...
- Sam Lightnin' Hopkins - I Wonder Why
- Dion/The Belmonts - I Wonder Why
- Dion the Belmonts - I Wonder Why (1958)
- Angel - I Wonder Why
- Bohannon - I Wonder Why
- Dion the Belmonts - I Wonder Why
- Joesef/Loyle Carner - I Wonder Why
- Curtis Stigers - I Wonder Why
- Ross Mitchell His Band and Singers - I Wonder Why (Slow Waltz / 30 BPM)
- 菓酱mullay - I wonder why
- Glenn Jones - I Wonder Why
- Dion - I Wonder Why
- Dion the Belmonts - I Wonder Why
- たかやん - なんでかな
- The Dancelife Studio Orchestra Singers - I Wonder Why (Slow Waltz / 29 Bpm)