Sagyôyô, BGMde muri ni ongaku wo yonda ri benkyô shitari, shûchû suru ongaku, rirakkusu suru ongaku, rirakkusu shite iyasa retari nemuri wo iyashi tari sutoresu wo kêgen suru dokusho ni tekishi teimasu, kurisutarumyûjikku Music for Work, Studyingaki no burûsu yû utsu na burûsu to rokku ongaku no mayonaka