Randy Newman was specifically commissioned by Pixar to write a song about the bond between Andy and Woody. While characters in Toy Story don't typically burst into song themselves, Newman's lyrics act as a narrative voice that guides the audience through the characters' changing relationships.
Featured as a diegetic (in-universe) performance by Wheezy (voiced by Robert Goulet) in a Sinatra-style croon. You Re A Got Friend In Me
What makes Toy Story theme song You got a Friend in Me so special? : r/Pixar Randy Newman was specifically commissioned by Pixar to
Reimagined as a flamenco version, "Para el Buzz Español," performed by the Gipsy Kings. "Para el Buzz Español