정한X조슈아 (SEVENTEEN) 1st Mini Album ‘DREAMSCAPE' highlight medley

In the Korean comments

One comment reads, in translation, “I love that he moved away from the acoustic genres he often did and took on something new even though it must have been difficult—and the challenge completely succeeded.” Another calls the style unexpected but says it suits JOSHUA.

What the words mean

“노래 개잘뽑았네” (norae gae-jal-ppobanne, the song came out extremely well) does not mean the song was literally “pulled out.” 잘 뽑았다 (jal ppobatda, came out well) casually praises how something was made, while 개 (gae-, extremely; blunt slang intensifier)- (gae-, extremely) is a blunt slang intensifier.