I want to know the answer to the following question:
Who had made an attempt in the 1920s to release a long play time recording?
All the background I'm provided with is that "At least one manufacturer in the early 1920s, World Records, produced records that played at a constant linear velocity, controlled by Noel Pemberton Billing's patented add-on governor device.". Is that enough to answer the question?
Answer: yes