Keen Bass: The Mindful Bassist's Journey redefines the learning experience for double bassists. Guided by Marcos Machado, we offer unique, standalone 5-8 page digital booklets. These booklets focus on specific bass concepts or excerpts to enhance your practice with consistency and variety. What sets Keen Bass apart is that you can purchase these releases anytime without needing a subscription. This gives you the freedom to tailor your learning experience to your own pace and interests.