Dear MIDI-B Challenge Teams, To continue serving the community, the MIDI Benchmark (MIDI-B) will be **open to the public from April 1 to June 30, 2025** (with a potential extension in the future). The data and submission procedure are the same as the MIDI-B Challenge from last year. Participants are allowed to submit de-identified data once per day for both the validation and test phases. I’d like to emphasize that this is a benchmark, rather than an official challenge. Additionally, there have been some changes to the answer key, which may result in different performance outcomes. **_“MIDI-B De-identification - Validation - Continuous Benchmarking”_** and **_"MIDI-B De-identification - Test - Continuous Benchmarking”_** are the [submission queues](https://www.synapse.org/Synapse:syn53065760/challenge/) for the MIDI-B continuous benchmarking phase. Feel free to test your MIDI algorithm! Sincerely, MIDI-B Challenge Organizers