Revise beat rate to 160 (or 320 if you go by the bass guitar), as to avoid need of any pauses to re-adjust beat?
I know, it'll knock things quite silly - take your time on that. If it works, then note that fractions of 60 are smiled on - and 39 isn't really a smooth fraction of 60. (0.65x60)
Of course, it could also be a 150 or 300 (2.5 or 5 x 60). It's worth tinkering with, the subtle changes are more noticeable after about 20 seconds in - since going off-timing really sticks out.
/me is totally not a mod or music pro, but knows enough.
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This is indeed heard when facing against Sheena, in Sylvarant. It is then heard in the battles against Abyssion, Regal, Kuchinawa, Seles, and the team of Farah, Garr, and Meredy. Discussion of where this song is heard (I think) is a little more on-topic
By the way, for those of you not in the total ToE loop (particularly Melnics), "Hweel" doesn't have an accurate translation, but it's easiest to interpret as "cool".