Hi McSwag,
Make sure you know the concepts of music really well and try to practise with past papers with the CD recording so you can get used to answering different excerpts or maybe go on Youtube or Spotify and write responses to excerpts of different songs. In terms of answering the question, make sure your make reference to the question and write in dot point form, there's no need to write a full essay for each question. For example, if the question is about pitch, say you talk about melody, you comment on it and make a reference back to the question, so something like this 'the violin melodic line first plays in the higher register and slowly descends into some lower-octave phrase, exploring the diverse pitch range of the instrument'
Hope this helps
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