I don't know why, but seiyuus never (publicly) tell their other musical talents (except for Hosoya Yoshimasa-san who admittedly said that he plays guitar and was a street musician before), but we see so much pictures on the internet of them showcasing that they are playing some musical instruments.

Anyways, here are some voice actors who have admitted or showcased photos or have live proof that they have another musical talent besides singing and dancing:

1. Hosoya Yoshimasa
       → plays the guitar

2. Saitou Souma
       → plays the guitar

3. Terashima Takuma
       → plays the guitar

4. Hatano Wataru
       → plays the guitar

5. Suzuki Tatsuhisa
       → plays the guitar and piano

6. Maeno Tomoaki
       → plays the flute

7. Morikubo Shōtaro
→ plays the guitar

8. Suzumura Kenichi
→ plays the guitar and piano
Seiyuu4Ever why is your hubby so amazing? //slapped

9. Umehara Yuuichirou
→ plays the guitar and piano (credits to @MissWynter)

10. Kimura Ryōhei
→ plays the piano/keyboard

11. Miyano Mamoru
→ plays the guitar, harmonica, and harp

12. Irino Miyu
       → plays the guitar

13. Aoi Shōta (credits to rraditha )
       → plays the piano and flute

14. Kakihara Tetsuya
       → plays the piano/keyboard

15. KENN
       → plays the piano/keyboard

16. Shirai Yusuke (credits to @J_Shimotsuki)
→ plays the drum

Will add more when I find pictures and proof.

06/15/2017