I recently saw an explanation (thanks to Steve Larsen) of the marking BTSOOI sometimes written into orchestra parts on orchestralist and thought it would be fun to share here. And I quote "The story goes back to the days of Eugene Ormandy (although some insist it went back further to Stokowsky). Ormandy was always wanting “more sound, more sound” from the orchestra, which got translated into the vernacular as “Bow/Beat/Blow the s*** out of it”, depending on what section you were in. The reminder the players wrote into their parts was BTSOOI. I was told that, in rehearsals, when even more sound was demanded, principals would turn to the section and say, “Double BTSOOI here until letter D”, or something to that effect. I’m sure that Ormandy thought they were using some American slang or folk dialect. BTSOOI, it was explained to me, was the secret of the fabled Philadelphia Sound. But I’ll leave that for others to argue." To keep this on topic which libs most effectively capture or express this sentiment?