What are "woodwind doubles"?

Woodwind doubles refer to woodwind players who are proficient in playing multiple woodwind instruments. This skill is common among professional musicians, especially those who perform in orchestras or ensembles where versatility is required. For example, a musician may play both the flute and the clarinet, having developed the necessary techniques and tone production skills for each instrument. This proficiency allows for greater flexibility in repertoire and instrumentation, as they can switch between instruments depending on the needs of the performance or the specific requirements of a piece of music.

The other options do not accurately capture the concept of "woodwind doubles." While double reeds are indeed associated with certain woodwind instruments, this description does not encompass the broader aspect of player proficiency. Additionally, the notion of instruments being in pairs or woodwind parts being organized in a duet does not reflect the skill set of a musician who can handle multiple woodwinds. Therefore, the focus on player expertise across different instruments clearly defines the correct answer.