However, there are some recurring themes and popular choices:
* "Distance" by ASIAN KUNG-FU GENERATION: This is a popular choice for preview music, used for many seasons of Naruto Shippuden. It's often used in scenes of epic battles and intense moments.
* "Blue Bird" by Ikimono-gakari: This song is also used in previews, particularly for the "Pain" arc.
* "Sign" by FLOW: This song is another classic Naruto Shippuden theme song, though it's less common in previews.
To find the specific song for a particular episode preview:
1. Watch the preview on YouTube: Many Naruto Shippuden episode previews are available on YouTube with titles like "Naruto Shippuden Episode [Number] Preview".
2. Use Shazam or SoundHound: These apps can identify songs playing in the background, even from video clips.
3. Check the Naruto Shippuden wiki or fan forums: They often have information on preview music for specific episodes.
Remember: There's no single definitive song for Naruto Shippuden previews, but these popular options will likely be found in many of them.