Well I can play all of Romberg's c major cello sonata at more than 60 BPM now. Although not as well as this fellow. Still have to practice it a lot. Amazing how bad recordings sound compared to live.

I think it took almost 6 months! And have been playing the cello now for a year. Slowed down by a few sixteenth note sections with 3/1 slurs. Now starting Squier's Tarantella which, although a harder (and better sounding) song, will surely go a bit faster.