What song is playing when Kakashi explains the terms of the bell test in episode 2? I have heard it in numerous episodes, including Naruto Shippuden episode 2 when Kakashi explains the terms of the bell test, and in one of the filler episodes in the war arc where Kakashi and Gai fight 2 of the swordsmen of the mist

YouTube link: https://www.youtube.com/watch?v=HJsqHazKzmc
This is the very first track of the Shippuden OST. The title of the track is Shippuden, found on OST 1