Use a single Dropdown widget to send different note MIDI messages (Value 1 = note 01, Value 2 = note 60, etc)

[Greenman]

https://openstagecontrol.ammd.net/docs/midi/

maybe that

One push button sends a sequence of values?

It could be done using a script widget (using the send function), however if you want to add delay between values you’ll need to create a custom module to take care of it.