Girls & Panzer, Hibike! Euphonium Recommendations
The main character is very knowledgeable in tanks/music. She doesn't want to join this club due to a past issue. Her new friends convince her to join said club as they too have taken interests in it. One series has all girl cast. The other a mix cast.
Despite the starkly different premises (tanks and music), these two shows are surprisingly similar. For starter, they both have schoolgirl protagonists that are well versed in their respective field but deliberately chose a school that is only mediocre in terms of tankery/music. Despite that, their respective school has a big dream of winning the national tournament. The protagonists are reluctant to join at first, but becoming more committed to the cause gradually. What follows is a story of their struggles to attain that dream.
Last but not least, the people who made these shows clearly did their research. You will pick up many interesting bits of