This is from childes/tartaglias voice actor, right? Well, it fits his personality perfectly 

Back of the throat

カレはヴォーカリスト▽CD 「ディア▽ヴォーカリスト Raving Beats！！！」 NSFW

Kare wa Vocalist CD «Dear❤Vocalist Riot» Entry No.5 YOU
(CV: Hanae Natsuki)

Only uploading tracks I've purchased. Please support the original artists!