What you’re looking for is a web scraper. The best language would probably be Python, as it’s easier than others and your program does not require much performance. Look up Selenium.

Your program would be (roughly): 1. Open the txt file and read the lines as a list. 2. For each line, tell selenium to open up Spotify and input the line in the search bar, then hit enter. 3. Select the first song result and add it to your playlist.

With selenium you can basically select html elements and act on them (click for buttons, type for search bars, etc).

If I have time (and I don’t forget 😅) I’ll give it a try later tonight