Jazz as a form of music has developed over a period of 100+ years. In its present form it has many styles of music. The result is that some "experts" define the word in different ways.
From this perspective, some forms of jazz music may be played in SDA congregations and performed by SDA choirs.
In addition, Seventh-day Adventists worship in many nations of this world. In some countries, the typical music found in a SDA congregation may be considered to be a form of jazz by people in other places.
My personal position is: God asks us to consider our personal relationship with God and God does not ask us to pass judgment on the fine points of how another person worships. The basic points may be found in Scripture. We do not have animal sacrifices today. But, Scripture leaves a lot up to the individual congregations to decide.