This upanišad contains the mahāvakyam so-ahamasmi.
It is both a vēda and an upanišad.
Not all students have the physical capacity to chant vaidīka svaras. There will be an entrance test for chanting lessons. Most people can sign up for the meanings classes or for the philosophy discussions.
You can also buy my eBook or Print Book on Pothi.com Is’A vAsya upaniSad (Isa Upanishad)
If you want to sign up for the paid classes, please leave me a comment. I will respond by e-mail.