Toy Story Opening Sequence

Analysis:

Main characters are introduced.
Engaging music which is non-diegetic, this is used to match the mood of the characters
Soundtrack is empathetic which also helps to represent the mood of the characters to the young audience.
A colourful setting is introduced, this also implicates that this will be the main setting. We can see this because all the main characters are introduced here and are all in one place.
The colourful costumes helps to engage the young audience and identify with at least one of the characters. It also helps to convey each character's personality through what they're wearing.