Spectrograms Are COOL! By Mike | May 2, 2013 - 4:34 pm |April 27, 2015 Audio, My Intrests So I started using a new application to listen to my audio. It has a spectrogram visualization. Here’s what Tchaikovsky’s Violin Concerto in D Major looks like: Allegro moderato – Approx. 2:54 – 3:24 track time Generated while listening to the MP3 in foobar2000. Related Tagged Foobar2000, Spectrogram. Bookmark the permalink.