Flexibility
In this section
What should a daily euphonium practice routine include
Build each session around sound, flexibility, articulation, and actual music. A short routine you can repeat most days will do more for your playing than an elaborate one you rarely finish.
How do I extend my range on the euphonium
Build range at both ends slowly and daily: lip slurs and flexibility for the high register, fourth-valve fingerings and relaxed open air for the low. Range grows from consistency and good air, not force.