In [[form-functional theory]], **hybrid themes** are those that combine [[phrase functions]] from the [[sentence]] and the [[period]]. Hybrid types consist of combinations of [[antecedent]], [[continuation]], [[cadential]], and [[consequent]] functions; the initiating function of [[presentation]] is not used, its place taken by the hybrid function compound basic idea. According to William Caplin (2013: 100), there are four main hybrid theme types:
1. antecedent + continuation
2. antecedent + cadential
3. compound basic idea + continuation
4. compound basic idea + consequent
## References
Caplin, William E. 2013. *Analyzing Classical Form: An Approach for the Classroom*. New York: Oxford University Press.