Instead of allowing your music to reduce your workout intensity instead of increase it we're going to create a one song playlist.
Choose a song that gets you pumped - the song length, genre, artist... that's all up to you.
Now put that song on repeat and get to work!
You'll quickly establish a working pace in-line with the song, after several plays through although your song will seep into the background you'll be more amped than ever, grinding out set after set, rep after rep with less perceived effort and increased intensity.