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"Chong Chong Piano" is a software that is dedicated to solving problems that users encounter when learning piano, such as finding professional sheet music, not understanding fingerings and music theory, finding practicing at home boring, lacking guidance, and lacking motivation to practice. It aims to make piano learning simpler and more efficient while promoting consistent practice.

"Chong Chong Piano" is a global leader in intelligent sheet music technology. It has successfully implemented features such as AI playback of sheet music, conversion of staff notation to simplified notation, and intelligent fingering annotations. The introduction of "Chong Chong Intelligent Practice" focuses on addressing the problem of playing wrong notes during practice. It provides real-time error correction, accurate evaluation, and comprehensive improvement in musical literacy. With scientific practice methods, progress is faster and interest is heightened!

Product Features:

• Massive Sheet Music Library, High-Quality Downloads: With "Chong Chong Piano," you no longer need to struggle to find professional sheet music. It covers a wide range of genres, from classical to popular music, providing high-definition scores. You can switch between staff notation and simplified notation with just one click and freely download and print the sheet music.
• Precise Error Correction, Eliminating Wrong Notes: Traditional piano practice can be tedious, and it's difficult to know when you're playing correctly or making mistakes. With "Chong Chong Intelligent Practice," you can receive real-time error correction from beginner to advanced levels. It identifies each wrong note and provides prompts for corrections. After playing, you can also receive accurate evaluations, making it easy to assess the effectiveness of your practice.
• Scientific Practice Methods, Multiplied Interest: "Chong Chong Sheet Music" offers a fun waterfall-style playing mode, with intelligent fingering annotations, solving the problem of unclear fingerings. You can practice with separate hands, loop difficult sections for individual practice, greatly enhancing the enjoyment of piano practice.
• Self-Study Course for Adults: If you want to learn piano on your own but don't know where to start or struggle to stay consistent, "Chong Chong Piano" has developed interactive courses for adult beginners. It provides intelligent accompaniment and high-definition demonstrations of challenging sections. Additionally, there is interactive music theory support, ensuring that you have guidance throughout your piano journey.

Why Choose Chong Chong Piano?

• Technological Advancements: Chong Chong Piano has a strong team of artificial intelligence experts who have successfully developed features such as AI playback, intelligent fingering annotations, and conversion from staff notation to simplified notation. With multiple core technology patents and data accumulated from over 10 million users, the algorithm models are constantly updated, making piano learning more scientific. Chong Chong Piano leads the industry in terms of accuracy and precision in intelligent recognition.
• Professional Team: The Chong Chong research and development team consists of professors, doctors, and master's degree graduates from top music schools both domestically and internationally. They focus on continuous music content development to ensure that all sheet music released is professional, comprehensive, and accurate. Every music lover can enjoy accurate and professional sheet music for their piano learning and practice.
• Established Brand: Chong Chong Piano has been serving musicians for over 22 years. With millions of registered users worldwide, it has become more than just a community platform. Chong Chong Piano now offers a range of outstanding products, including the PC official website, Chong Chong Piano mobile app, and international version, establishing itself as a trusted and reputable brand.

Auto-Renewal Subscription Information:

1. Subscription Service: Auto-renewal SVIP yearly subscription (1 year), Auto-renewal VIP yearly subscription (1 year).
2. Subscription Prices: The price for auto-renewal SVIP yearly subscription is 168 RMB, the price for auto-renewal VIP yearly subscription is 98 RMB.
3. Payment: After users confirm the purchase and make the payment, it will be charged to their iTunes account.
4. Auto-Renewal: The Apple iTunes account will be charged within 24 hours prior to the expiration date. After a successful charge, the subscription period will extend for one subscription cycle.
5. Canceling the Service: To cancel the service, users can go to "Settings" on their Apple phone, enter "iTunes Store and App Store," click on their Apple ID, select "View Apple ID," go to the "Account Settings" page, click on "Subscriptions," and manage the auto-renewal service. Users can turn it off anytime during the 24 hours before the end of each billing cycle to avoid being charged again.

Service Agreements:

• a) Service Agreement
• b) Privacy Policy
• c) Auto-Renewal Service Agreement