This example is a port of the open-source, hubble-hearing app found here:
https://www3.nasa.gov/specials/hubble-hearing-app/
Data for ngc1850-blue can be found here:
https://www3.nasa.gov/specials/hubble-hearing-app/data/ngc1850-blue/ngc1850-blue_peaks.json
https://www3.nasa.gov/specials/hubble-hearing-app/data/ngc1850-blue/ngc1850-blue_LR_grey.json
https://www3.nasa.gov/specials/hubble-hearing-app/data/ngc1850-blue/ngc1850-blue_LR_color.json
Additional playhead data for _UD_, _polar_, _radial_ follows the pattern
of _LR_ above.