This is the first commemorative celebration of Pioneer Day (July 24, 1847) to be held in the (then new) Conference Center in Salt Lake City.
Mostly music by the Tabernacle Choir and orchestra, with some pre-filmed visuals of historic interest.
Wikipedia:
Pioneer Day is an official holiday celebrated on July 24 in the American state of Utah, with some celebrations taking place in regions of surrounding states originally settled by Mormon pioneers. It commemorates the entry of Brigham Young and the first group of Mormon pioneers into the Salt Lake Valley on July 24, 1847, where the Latter-day Saints settled after being forced from Nauvoo, Illinois, and other locations in the eastern United States. Parades, fireworks, rodeos, and other festivities help commemorate the event. Similar to July 4, many local and all state-run government offices and many businesses are closed on Pioneer Day. ( )