Codes and conventions of teaser trailers

Jennifer's Body

The trailer start with a slow drawn out sound
White font writing is shown in-between shots
Change in depth of the music
Red tint on screen as killings and transformation happen.

Orphan

Long sound, piano music at the start
Start seems calm and slow (not like a horror)
Music changes (deep dark sounds)
Cuts become faster
flash shots of the orphan.

Halloween 2

Boom sound as title appears
Long sounds
semiconscious half drowned out sound
Music builds in intensity
Flashes to black with a bang
Thunder sound (echo)
Black and white camera shot is used to show flashbacks

Drag me to hell

Soft piano music at the start
Calm slow start
Music suddenly changes to long deep sound as mysterious women turns.quick flashes to black
Loud scream used
Cuts quicken
text in-between cuts
Title shown in slow motion

Babysitter wanted

Long slow choir sound to begin with
fades from black
slow start
Magazine review comments in-between cuts
Dark scenery used
Sound of broken phone line
Music tempo builds
finishes with scream
Awards and nominations dominate the screen

The last house on the left

Piano music over the start
Slow calm start
Music sharpens (more conventional horror sounds)
Flashes to back
some odd cheerful music appears and doesn't fit in to the actions
fast cuts with text in-between them

(All of the trailer were found on the apple trailers website)