Hello! I am a high school orchestra director who is working on building up our solo and ensemble library. We were given a nice allotment of money from the district for instructional materials so I want to be sure to spend it wisely. What would you consider to be essential solo material for developing bassists? I have a fantastic group of eager students and I'm so excited to expand the music available to them. They also enjoy playing together after school so any bass duets/trios/etc would be wonderful too. These bassists have a wide range of abilities. Some are considering majoring in music and some have played for only 3 years. Thank you so much in advance!!!