Boyd has held orchestral positions with the Aspen Festival Orchestra, Chautauqua Symphony and Filarmonica de las Americas.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: Boyd has held orchestral positions with the Aspen Festival Orchestra, Chautauqua Symphony and Filarmonica de las Americas. ### Response: .