Comparative and contrastive paragraph

There are many different ways of enjoying music. People playing in a rock band, for example, have to be very energetic and they should have the strengh to move a lot in the stage. In contrast, a person who plays a musical instrument, like a piano or a violin, has to behave in a calmed way while he is performing. There are more differencies. When you play in a rock band, you can improvise and you needn't have an schedule, while playing a musical instrument needs concentration a following some steps. Furthermore, if you are in a band you can connect with the public, I mean, talking with them and saying something between songs. On the other hand, if you are playing the violin, for example, you have to be quiet; you connect also with the public, but in a very different way.
There are also some similarities between both kinds of playing music. If you play a musical instrument you make people enjoy the performance, the same as in a rock band. Each way attracts a lot of people who want to see the artists, so both of them are fantastic to enjoy, alone or with a group of friends.