Prog house not trance, but Hernan Cattaneo’s Balance Presents Sudbeat Continuous Mix 2 [0] is my absolute go-to as a complement for focusing/thinking etc. Not his overall best work, but for my criteria for focus music it’s amazing (butter smooth transitions, no vocals, continuity throughout mix, ~120 bpm).
[0]: https://open.spotify.com/track/1t7EJCFDDcJKBF129PvJan