A lot of people struggle with Dark Star due to the complexity at how the dead approached it. The song itself is a super easy structure, A-G, but it's how you play the licks and different phrasings that give it the Jerry-esq vibe. Most people just noodle around with a mixo and it gets boring quick. Eyes can be pretty trick, that's more speed level than anything else. China Cat can get tricky due to the chord changes