The DVD Version issued by Criterion (at least the most recent edition on Blu-ray) has an interesting bonus clip showing Miles improvising the score while viewing the film. The take in this clip is actually a second take shot for a documentary, immediately after Miles had actually improvised the score in the same manner. It lasts just a few minutes, but is riveting. It has close-ups of Miles face and fingering on the trumpet. Of course, this method was not new at all. It is how the live music accompaniment to ALL silent films was done for about 20 years. When they used live orchestras, there may have been a score, but the conductor did his work as he viewed the film, and the orchestra members had to have some skill to improvise within some boundaries. When films in the 1920's were changing twice a week in the grand movie palaces (all with an orchestra pit), the need for spontaneity by musicians, arrangers, composers and conductors was very demanding. I believe the movie palaces in the bigger cities often used orchestras, while smaller cities and towns used a pianist or "theater organ" player who had to have a great reserve of themes and the ability to improvise. They did not have the luxury of previously viewing the film before creating the improvised score as Miles did for this effort. The second and third nights in a 1920's film presentation had different accompaniment by the pianist/organist for sure. One of the greatest improvising theater organists (theater organs include a grand piano in the walls of the theater!), Alan Mills (RIP), once lived in my town, and would perform regularly to silent films in one of the last surviving grand theaters of the 1920's. His musical interpretation of the great masterpiece "Metropolis" was far better than any prepared score issued on any DVD, and it was completely improvised. There was definitely a lot more work for professional musicians in the 1920's than today, even though our population has more than tripled. Every major theater had an orchestra, every hotel and most restaurants had a band, and the larger ones all had an orchestra. Every radio station had several bands and orchestras. Multi-tracking recording has reduced the number of recording studio musicians. It is possible that there are more musicians overall today (with the tripled population), but far fewer of them are professionals supporting a household. The instruments played by these musicians of the 192os can be found in poor condition, decorating the walls of chain restaurants across this nation. Or they were melted down in the recycling efforts of World War II.