Sanulrim should've been written about sooner because I've played them more than any other Korean rock group as of late. Their swirling organs and fuzz guitar make an excellent combo. And what's above is true: Play track 1 side 1 of their 1st album, "Ah! Already?" below and hear for yourself:
Anyone who likes older pop and rock would enjoy these guys. Their first three albums got reissued as a combo package of CDs and SACDs recently, but I think it's gone out of print because it was a limited edition. Youtube has many of their songs though.
Despite the 1978 recording date, the production veers closer to 1966 due to the limitations of Korea's recording studios at the time. It sounds out of time because of
My Korean isn't good enough to understand everything in the lyrics, but most songs deal with pop topic mainstays like summer romances and unrequited love.
The blog Ghost Capital wrote about the group here.
A biography and review of their albums here.