K-pop fans have short attention spans, especially the ones that pledge their devotion to YG Entertainment, so I understand why BIGBANG decided to release their MADE album as four separate double A-side singles, one per month, until the full album is available.
NS Yoon-G is no stranger to paying homage to other artists (i.e. robbing at gunpoint). She delivered a bubblegum "Bulletproof" with her early single "Don't Go Back," and then transformed herself into JLo's skeleton for "Wifey" earlier this year.
SISTAR is the biggest post-T-ara girl group in K-pop. For the most part they've done their best to keep their sound fresh without straying too far from their signature traits, but somehow they've earned a reputation among certain K-pop fans for being serial song recyclers like AOA.