The Sentimental Chord is the fourth Korean studio album by SG Wannabe.

The album is notable for containing a rendition of the traditional Korean folk song "Arirang" ("아리랑") that incorporates the playing of classic Korean instruments in the accompanying background track.

The Sentimental Chord went to #1 on the RIAK charts[1] and so far, it has sold 195,502 copies in cumulative sales.

[2][3][4] Towards the end of the year, The Sentimental Chord won SG Wannabe an Album Daesang prize at the Golden Disk Awards (their second prize after Saldaga) as they reigned as the year's top artist.

The music video for "Stay" featured Ha Seok-jin and Shin Min-hee.