The crossword solution for the term 'BASSOON END' is IST, which stands for Instrumental Soloist. An instrumental soloist is a musician who performs alone or with a small ensemble. The BASSOON is a woodwind instrument that is often used in orchestras and chamber music. The END of the BASSOON is the part that is held by the player and is used to control the sound. IST is an abbreviation for Instrumental Soloist, which is someone who plays the BASSOON as a solo instrument.