No, you do not need to purchase the plug-in. However, in order to use the MUSIA Plugin, you must subscribe to a subscription service with a monthly or yearly payment.
Currently, MUSIA sends a melody to a plug-in after the MUSIA cloud server generates it with AI when requested after generating a code in a plug-in. The MUSIA team, which urges to deliver more suitable melodies, provides a service with a melody generation system on a server to improve melody generating algorithms regularly. Therefore, the MUSIA plug-in is unavailable in offline mode currently, and we offer the subscription services first to ensure the accessible time.
Additionally, we are currently developing algorithms for offline-based music generation to be built into a plug-in. As MUSIA's algorithm is fully developed, we will also offer MUSIA plug-ins other than the subscriptions.