Q the trumpet – 멍 (zone out)
Track 07 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 혼자가 아니야(with. Soul delivery) (WITH MY FRIENDS)
Track 08 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 질투 (Jealousy)
Track 06 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 겉 (gut)
Track 04 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 내 맘 대 로 (LA LA LA)
Track 01 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 귀찮아 나 (DO I HAVE TO DO IT MYSELF?)
Track 02 from Album '연구일지 2 (Research Daily 2)'
Q the trumpet – 질투
Track 02 from Single '질투'