Ah yes. This is the first Final Fantasy 7 track I wanted to SNES remix. I really hope Final Fantasy 7 for the PS4 and possibly the NX has great the music like the PS1 version which it probably will offer. I mixed these 2 tracks with Synthfont with instruments from plenty of games. As for the SNES violin, I mixed it with the Secret of Mana strings a little bit. You can never go wrong with the DKC2 violin at all. Here are the instruments I used for "Bombing Mission" (MIDI for it was made by King Meteor).
Trombone: Final Fantasy 3, Donkey Kong Country 2
Synth Bass: Super Mario RPG, War of the Gems
Drum Kit: SNES V1 soundfont, Breath of Fire 2
Piccolo: Pac-Attack
Slap Bass (originally finger bass): F-Zero
Piano: Super Mario World, Contra 3
Violin: Donkey Kong Country 2, A bit of Secret of Mana strings
Trumpet: Tetris Attack
Strings: Final Fantasy 3
Timpani: Super Mario All-Stars, Final Fantasy 2