Mitch forgot to mention this event. You will notice he was one of the missionaries asked to sing. This is from the Buenos Aires mission blog:
November 23, 2013
There was a multi-stake meeting to promote scouting in the church here in Argentina. Elder Viñas was the featured speaker. (Elder Francisco J. Viñas was sustained a member of the First Quorum of the Seventy of The Church of Jesus Christ of Latter-day Saints on April 4, 1998.)
Our mission was asked to provide missionaries to sing the last two verses of called to serve at the end of the meeting. Thus, making the connection between skills and leaderships experiences offered by scouting as a means to prepare to go on a mission. They surprised all who were in attendance when they marched in.