Dialogue –

“I stick my neck out for nobody” – This use of dialogue creates an insider to the type of character rick is early on in the film, it isn’t until having rekindle the love he has for Ilsa he changes from his cynical nature to that of a Caring person. This can be proven with his reoccurring line ‘Here’s looking at you, kid’ being said whenever he is in a happy mental state.

Underscoring –

Underscoring is used to establish a characters presence in Casablanca. This is best shown in the scene where Rick sees Ilsa. Further in the film we come to understand the significance of the dramatic score used to mark her presence as he is shown to be her past lover.

Sound Motif –

The sound of a piano is associated to Ricks café, this is because whenever a scene inside the bar is shown, the sound of music coming from Sam’s piano is always associated to it.

Synchronous Music –

Synchronous sound can be heard with the plane to Lisbon for example, When the sound of a plane engine is heard by the characters, Rick and Ilsa the next shot is of its origin as a planes propellers start to spin.

Sound Mixing (Atmos/Foley) –

Sound mixing, also known as Foley sound can be found mainly in the scenes of Ricks café. With the clinks of glasses being heard in the background during dialogue, it creates an immersive atmosphere to the scenes location.