Okaaaay, you asked for it lol ^^! I am a bit confused at your request for "relaxing" songs. Do you mean slow songs that relax one's mind, relazing in a happy way, or just one's that aren't headbanging? I guess I'll try to avoid songs that are slow and relaxing in the beat but are depressing.
1) Well, first off, here's a song I've been obsessively playing for about a month non-stop.
Rain Bow - Infinite Flow (feat. JW of Nell and Tablo of Epik High)
What makes this song "relaxing" for me is the soft beat and continuous flow of the song. What I love about this song is not just the feature of indie band Nell's lead singer JW in the chorus (who, by the way, makes any song automatically win whenever he features in it). What grabs me the most about this song is that second rapper that comes on. He just mesmerizes me with his voice! He has a soft rapping voice and a smooth flow.
2) Here's a collab between Epik High and new singer KWill. This song always cheers me up ^^! I think it's just because I know just how much music means to Epik High..and beause they're such dorks in the MV. And loving it.
Music is My Life - Epik High & KWill
3) And here's Epik High's latest MV before they come out with a new one in December (hoping~!) Epik High, just yesterday, won the best hip-hop group award in the 2007 end-of-the-year MKMF Korean Music Awards!
Love Love Love - Epik High
I'm sorry this is so Epik High-biased. I would post more music by other artists but...most of the hip-hop bands I listen are either completely underground or have few MVs and broadcasted perfs floating around on Youtube (which aren't exactly relaxing, i had to cross out all the ones with swear words because there might be kids in here XD) but they prefer to hold non-broadcasted concerts =(