Not the real rain but Korean superstar, Rain has arrived in Singapore quietly and unnoticed where he will participate in the recording of a short segment for the F1 Rocks show, a music festival sideshow to the F1 Singapore Grand Prix which is taking place from 25 - 27th September. The 3-day music festival begins tonight, 24th September and will continue on 25 - 26th September before the actual race on 27th September at Fort Canning Park. Rain touched down in Singapore on 23rd September at 5.15am and was seen in casual clothing and wearing a cap. The filming took place at the Chinese and Japanese Gardens, along with F1 driver Mark Webber. The recorded segment will also seek to promote his upcoming Hollywood movie, Ninja Assassin. PHOTO: CHEW SENG KIM As this was strictly a business trip, Rain will not be meeting his fans in Singapore and was back in Seoul on the 24th.