Here's some of my favorites over the years.
https://www.youtube.com/watch?v=JP9vNQTE8TQIt feels like the ghosts have found peace
despite the fact that their final resting place was dug to shit to put a radio tower in. I swear to god Kanto is such a region of assholes.https://www.youtube.com/watch?v=XySQFCrIh-0One of the happiest route themes that always gets stuck in my head. I also love Route 47 which was linked above.
https://www.youtube.com/watch?v=fkhVBUt94Z0Speaking of catchy tunes, I had this song stuck in my head non-stop as a kid. I don't quite like the new version as much though.
https://www.youtube.com/watch?v=z8NHTW3Qedohttps://www.youtube.com/watch?v=6hGWPmW4OxINot too many Gen 3 song stick out to me, but I always loved the contest music and the haunting sounds of Route 113.
https://www.youtube.com/watch?v=npOxbkubyEAhttps://www.youtube.com/watch?v=2ajhgkYFCG0Gen 4 had some very nice music, but I'm eternally in love with the first two pieces of music you encounter on your journey.
https://www.youtube.com/watch?v=nW4LnRYqU04https://www.youtube.com/watch?v=Wn0Fe3FKbcoThese two town themes I just adore with the musical additions. I hope that feature comes back at some point in the future.
https://www.youtube.com/watch?v=WxPOSrrWjJYEmotion is a really amazing piece of music that I can listen to at any point and might be one of my favorites in the franchise as a whole.
https://www.youtube.com/watch?v=a0P-qtHHKf8N's farewell is really just the perfect piece of music to end the game on. I liked the credits, but frankly, I would have been happy with this ending the game.
https://www.youtube.com/watch?v=CXP2M554G5cThis piece of music took me by complete surprise when I played the game, it was a perfect way to start Black 2, and then...
https://www.youtube.com/watch?v=VA5u5Yi2AIoThis is one of my favorite credit themes in the series, as it ties everything up and even ends with the same music as the game began.