The mood for Inside Out really comes through the music that has been used in the nearly 2-and-a-half minute trailer.
The first song featured in the trailer is an instrumental of Kathryn Ostenberg’s “Spread My Wings”. This is a beautiful song that sounds very close to the first song that was used in the teaser trailer .
The second song featured in the trailer is the famous “More Than A Feeling” by the rock band Boston.
(Sources: First song- Siri ; Second song- (What’s The) Name Of The Song)