The score made extensive use of the piano, an instrument which O'Donnell used frequently for composition but that had not been featured in previous Halo music.
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: The score made extensive use of the piano, an instrument which O'Donnell used frequently for composition but that had not been featured in previous Halo music. ### Response: .