Circuitpython USB MIDI using Blinka

I am making a MIDI controller using a Pico and circutpython usb_midi support. i have it working using straight circuitpython but i also want to use the pimoroni micropython Pico Scroll Pack library . I installed Blinka but im getting 'ImportError: no module named ‘usb_midi’ ', other circuit python libraries are working.
usb_midi is in circuit python core but i cant find it as a stand alone module. Any ideas on how to get it working?

or is there a way to send USb midi from micropython?