It was a masterful blend of RPG, dungeon crawl, and puzzles and had a memorable soundtrack.
https://www.youtube.com/watch?v=ru5kg35dNso
Having a bard in your party let you choose a soundtrack and their songs brought magical effects. For example, the Rhyme of Duotime let your party attack more frequently in combat: https://www.youtube.com/watch?v=_oR4j7w4FIY
BT3 is available on the Internet Archive: https://archive.org/details/msdos_The_Bards_Tale_3_-_Thief_O...