osu! but the BPM keeps changing (Hungarian Dance No. 5)

It's very hard to get good accuracy when the map just keeps changing the BPM. Still was able to pull off a 99% on this though! Watch me play live!:   / willy   Profile: https://osu.ppy.sh/u/3521482 Beatmap: https://osu.ppy.sh/b/485631 Martynas - Hungarian Dance No. 5 in G minor [Insane] +DT 99.61% FC (Willy) #osu! #willyosu