About how many hours should it take to finish Fundementals 1? Fundementals 2? Assuming enough practice hours to get competent but not perfect at the various practice songs (I can play them with occasional mistakes at 75%-100% speed). I got through Fundementals 1 in about 5 weeks, 15-20 hours practice per week. Is that too fast? Should I be slowing down to get better at practice songs?