Red Velvet fans have begun to notice members’ voices being heard on subway trains in Korea regarding safety.

Joy has recorded an announcement that’s being played on the subway system regarding safety! There’s really nothing our Joy can’t do. She was brilliant recording her announcements for “Handsome Tigers” too. 💚#JOY #조이 #레드벨벳 #RedVelvetpic.twitter.com/XX61QoQfIf — JOY 조이 Updates & Pics 💚 (@joysooyoungpics) April 2, 2020

Those that heard the public service announcements figured out that Seulgi‘s voice was heard on the inner circle line and Joy‘s voice was heard on the outer circle line for the Seoul Subway Line 2.

Seoul Subway Line 2 Red Velvet Public Service Announcements

Inner circle line – Seulgi's voice

Outer circle line – Joy's voice OP will double check tomorrow!https://t.co/m70x38m5tr https://t.co/b707hebC7Q — Seulgi pics ♡ 슬기 나비야 (@seulpics) April 2, 2020

They recorded various public safety announcements with their bright and cheery voices. Joy could be heard making an announcement about expectant mothers.

“There are seats with a pink sign on them for expectant mothers. Please give up your seat to help expectant mothers have a comfortable experience on the train. Thank you.”

지하철에서 조이 목소리 방송으로 나온대… 멘트는

안녕하세요 레드벨벳 조이입니다.

지하철은 공공장소이니 이어폰을 사용해주세요. 등등.. 여러가지 pic.twitter.com/VVezFjWWSG — Wㅘ니💙 (@SWani0221) April 1, 2020

“The subway is a public place that is used by many people so please use earphones and talk in a soft voice to make short phone calls. Thank you.”

🐥 전동차는 여러 사람이 함께 이용하는 공간이오니 스마트폰 등 휴대기기를 사용할 때에는 이어폰을 착용하시고 작은 목소리로 짧게 통화하여 주시기 바랍니다 감사합니다 pic.twitter.com/IwSemxLX96 — 꽃보다차밍둥🌹🌻🌷 (@_joyo903) April 2, 2020

“Please don’t try to push yourself on when the train doors are closing. It is dangerous to grab or lean against the doors so please be careful. Please also be careful of items getting stuck between the doors as it could cause problems for the trains.”

🐥 출입문이 닫힐 때에는 무리하게 타지 마시고 출입문을 손을 짚거나 기대면 위험하오니 조심하시기 바랍니다 그리고 열차 운행에 지장을 줄 수 있으니 출입문에 이물질이 끼이지 않도록 주의해 주시기 바랍니다 pic.twitter.com/CFtQxQ85xe — 꽃보다차밍둥🌹🌻🌷 (@_joyo903) April 2, 2020

Fans who heard the subway announcements enjoyed listening to their beautiful voices on their way to work.

If you ever have a chance to visit Korea, make sure to ride Line 2 to listen to their angelic voices!