No, what Raavan is putting music for is Sama Veda. It is the Veda with all the swaras, the origin of music. Krishna Yajurveda is attributed to Sage Yajnavalkya, who got it specially from Devi Saraswati. And the Vedas weren't divided into four actually. Those days the Veda was a sacred text, with many parts. The Rik, Yajur, Sama and Atharva. Later, sage Vedavyasa divided them into four separate Vedas. The part which Ravan tunes in the Sama Veda.