As the song starts ,the pitch starts rising slowly from the beginning and then goes higher from 0:36 to 0:55 and this is is one of the greatest impact when performing music to take for consideration because it draws attention to one who is listening other than a song playing in the same pitch.
Secondly I do believe the pitch of the music goes with how the song is expressed and from the song above it is very clear how the musician expresses the feelings he has.
Also concerning the melody of the song rises and falls slowly with only small pitch changes between one note and the next with stepwise motion. Also there is a wide range between the highest and the lowest pitches as it is noticed from the beginning to 0:55 min and continues repeatedly from 1:08 to 1:28.
The texture of the music is homophonic ,it is performed with a couple of supporting accompaniments ,that is guiter, drums and piano to name a few. The instruments provide a backup and support the soloist to make the music lively and more entertaining and most importantly the rhythm of the music goes with the voice of the singer. The rhythm is constant throughout the music which makes it more understanding and easily to predict.