Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Shorter than I expected, but...

... definitely worthwile.This DVD comprises the early Satriani video clips, from the first album 'till The Extremist. Authentic milestones in Joe's career such as Satch Boogie, Summer song or The Extremist are included along with interviews with him and other people of theiir team: musicians, sound engineers, producers. Unfortunately it's only 50 minutes long, that's the only reason I don't give it a full 5 stars.Anyway, I think no fan of Satriani should miss it.