Tip: I thought the headphone post was a little weak so here's another one... Mixing drums. tuning drums is essential to live recording; However its not always done right or beatmakers will just throw on any ol drum set. If you want your drums to feel locked in and sounding super tight, try an boosting an eq using the key of the song. Using plugins like "rbass" or just a standard eq and add frequencies in the key of the song. If the song is in C try and find the frequency that would enhance that. Using 5ths or the tonic depending on what sounds good or even subtracting the tritone could help your drums sound more in sync with the music. Country music uses this trick a lot, and sometimes the over use of this can make it the drums sound stale. Use it with discretion. Happy music making