On August 16, author, pundit, and radio personality Dennis Prager — who also happens to be an amateur conductor — led the Santa Monica Symphony Orchestra in a performance of Franz Joseph Haydn’s Symphony No. 51 in B-flat major before a sold-out house, amidst the unique architecture and near-flawless acoustics of the Walt Disney Concert Hall in Los Angeles. Prager, a lifelong classical-music devotee, has, through his guest-conducting efforts, helped a number of orchestras raise operating funds and reach a wider audience. Knowing this, the SMSO approached Prager earlier this year to enlist his help, and he was keen to...