Your choice of music when high can depend on your personal taste, but here are some popular Spotify playlists that many people enjoy:

1. "Chill Tracks" - This playlist features a mix of mellow tunes from different genres. It's perfect for those who want to relax and unwind.

2. "Psychedelic Rock" - If you're into classic rock, this playlist offers a collection of psychedelic tunes from the '60s and '70s.

3. "Mellow Beats" - This playlist is filled with instrumental tracks, perfect for those who prefer music without lyrics.

4. "Reggae Infusions" - A collection of reggae and reggae-inspired tracks to keep the good vibes going.

5. "Indie Chillout" - A selection of indie tracks that are perfect for a laid-back listening session.

6. "Lo-Fi Beats" - This playlist is full of low-fidelity music that's great for background listening.

Remember, everyone's preferences are different, so feel free to explore and find what suits you the best.