When choosing Pilates class music, aim for 60-90 BPM for mat work or 80-100 BPM...

https://mighty-wiki.win/index.php/Best_Music_Tempo_for_Reformer_Pilates_Flow_Classes

When choosing Pilates class music, aim for 60-90 BPM for mat work or 80-100 BPM for flowing sequences—this keeps the rhythm steady and supportive. Keep volume low so your cues and students’ breath come through clearly