Is he refering to Protoman's theme or actual blues music? The fact that there is whistling before entering makes me think it's the former.
Yoooo! 'Scuse meee!!※Erotic ArtDOA feel rivaling Iwao'sJoltAn Incident OccursI'm sorry...I'll go and come in again...Peep-peeeep Pweeeeeeee♪No Privacy in Dorm LifeAren't you off character somehow?Stop it...stop it...!Where'd the usual sense of doing as you please go...?I...Severe ConsequencesUh...okay. No, wait.Since then, whenever he comes over, he's learned to whistle when he appears.KUDOErotic ArtDon't get so serious about it...FlusteredKI got a new movie DVD in, so let's watch——it!?Slammm!!WIs that Protoman...?