I joined an amateur/semi-pro standard orchestra recently after many years of only brass bands. Trumpet/cornet switching complexities aside, i find one of the most difficult things to play in an Orchestra is the exposed sustained PP passages with tidy and sometimes varied articulation (Tchaik Piano Concerto 1st move 2nd trumpet fanfare is a bugger) in tune cold after 120 bars rest

! How do you set up your breathing and tongue to strike that first note in tune, with good sound and clarity from cold?