English: Representative song phrases (.wav). Example phrases for each of the two songs (Acoustic file S1 = record of mn132a and Acoustic File S2 = record of mn133a) are contained in wav files within the supporting information. Representative phrases were selected based on lack of background interference, and are not continuous because phrases were often repeated. Shorter versions of phrases were chosen, and files were decimated to a sampling rate of 44100 Hz in order to comply with the journal's size limits for supporting information. Frequencies below 400 Hz were emphasized to compensate for the tag hardware's built-in high pass filter (see Methods text). In some cases, acoustic sonar pulses may be audible in the background of clips – this is due to the research vessel leaving echosounders on for safety in uncharted waters.