The PSYOPS-used EC-130J commands “Commando Solo, music off.”
The Pennsylvania Air National Guard’s version of the EC-130, designated as the EC-130J, is employed for psychological operations (PSYOPS). It is the only flying military radio and TV broadcast platform in the U.S. military and is capable of broadcasting TV and radio messages on all bands. When the unit obtained the EC-121S Coronet Solo in 1968, the 193rd Tactical Electronics Warfare Group began using an “airborne information operations platform.” The 193rd SOW brought to an end a 54-year chapter in history as one of the three EC-130J Commando Solo aircraft delivered its final broadcast.
Source: https://theaviationist.com/2022/09/19/ec-130j-final-broadcast/