Louis Armstrong. Perhaps the most well-known and influential jazz musician of all time. He had the whole package: he was both an incredible trumpet player who basically taught jazz how to swing, and he invented scat singing with his noticeably unique raspy voice. In addition, he performed with antics that make it hard not to smile while you watch. And maybe that is what sealed the deal for Louis Armstrong. He was the first iconic American performer. It may seem that Satchmo is just expressing his enthusiastic personality, but really, Armstrong knew exactly what he was doing. Every time he stepped on a stage, Armstrong presented that caricatured version of himself that audiences loved so much. Just look at the first video. Clearly the man playing the saxophone is the bandleader and Armstrong is just a guest, but Louis literally "steals the stage," allowing the bandleader only a short opportunity to be heard. Below is another example of classic Louis, this time in a rare video with future jazz legend Dizzy Gillespie:
Not only is the music enjoyable, but it is just fun to watch. Everyone on stage looks like they are having a great time, and they really project that to the audience.
Okay, so it's not hard to enjoy Louis Armstrong acting silly onstage, but how does that relate to today? That is not very difficult. Look not further than your very own modern "make a fool of yourself just to get attention" performer: Lady Gaga. I mean, people don't just wear things like this just because they feel like it:

Just like Louis, everything Lady Gaga does is a calculated effort to attract attention. And boy, has it worked.
Clearly the way the musician performs has evolved tremendously over time. Louis Armstrong's performance style would not work today just as much as Lady Gaga will not be relevant in fifty years. People will wonder why there was some woman rolling around a stage wearing Saran wrap. All forms of media have undergone this evolution over the past century. We began with silent films and are now watching ultra-high definition 3D movies on IMAX screens. Additionally, the way information is communicated has evolved a tremendous amount. The only way to receive news from beyond a small distance was by newspapers. Now, we have television, radio, and the internet. The internet is an especially interesting new form of media because it allows individuals to have a large influence on many people through the use of Twitter and blogs. And just as the performer has evolved, we can only expect media to improve and innovate.