Using pirated software, including cracked versions of Sibelius 7, has several consequences. Firstly, it deprives the software developers of revenue, which can impact their ability to invest in research and development, customer support, and future software updates. Secondly, pirated software often lacks critical updates, bug fixes, and security patches, making it vulnerable to errors and security breaches. Finally, users who use pirated software may experience compatibility issues, data loss, or corruption, which can lead to frustration and wasted time.