For those who don't know, you can study with Miku listening to her songs in chill mode:
https://youtu.be/gdssxLx7ofs?si=ndTT2LUq751UK6rz
https://youtu.be/J8P_1fVRYQI?si=fD83OkUwnnrRQA21
https://youtu.be/Y54h0wQmQw4?si=Jq41O1MBOsRI-fFD
My favourite is the second one, but you can decide.