Only 23 radio broadcasts are known to exist in recorded form.
Easy-to-learn performance and production techniques, together with readily accessible models in recorded form, change the way music is made.
She explained that the Neolithic cave paintings were humanity's first recorded form of virtual expression.
"It's so much easier to give blind people material in recorded form."
This derivation is supported by the majority of earlier recorded forms.
Only a few dozen episodes of the original serial have survived in recorded form.
If any of this ever turns up in any recorded form at all, you'll not be getting another.
Only 75 episodes are known to exist in recorded form.
The oddity is the music, which was heard in recorded form and at a comfortable dynamic level.
Its composer-centric releases focus on orchestral works that are otherwise unavailable in recorded form.