Call and response is sometimes described as a "question and answer" style. It is found in almost all styles of music and originally comes from the Blues. Another common place to hear call and response is in Gospel music where the "call" is made by the preacher and the "response" is made by the congregation. The simplest form of call and response is direct imitation. This is demonstrated in the example below where the guitar (call) is answered by the sax (response). This type of playing is lots of fun as well as being great ear and memory training. On the recording, a space is left for you to play the response on the repeat.
In the following example, the sax once again answers the guitar, but this time the sax line is a variation rather than an exact repetition. When two musicians play like this it becomes like a conversation, which is very satisfying musically as well as being entertaining for the listener. Try getting together with another musician and playing call and response along with a recorded background. If you are playing the first part (call) make clear statements that are easy for both the other player and the listener to follow. If you are playing the second part (response), make sure your part relates strongly to the call rather than playing a totally different idea. On the recording, a space is left for you to play the response on the repeat.
One of the most common situations where call and response is used is when you are playing fills in between lines sung by a vocalist. This is demonstrated in the following example. The trick here is learning to play lines that fit well between the vocal lines instead of running over the top of them.
One more interesting way of using call and response is between two different octaves or two different ideas on the same instrument, as shown in the following example. Experiment with this type of playing when you are improvising.
Here is a solo which makes use of almost everything you have learned so far. There are many symbols and markings on the music, which means you can see very specifically how the notes are to be played. Take your time with it and be sure to get all of the expressions, techniques and articulations. Listen to the CD several times until you are confident you can reproduce all of the sounds. As mentioned earlier, most written music doesn’t contain this much detail on how to play the notes, so you will need to be aware that any of these expressions and techniques may be used in whatever you are playing. The more you listen to good sax players (both live and on albums) the more you will come to understand and instinctively know where each sound will work and where it won’t.