Adams Academy Junior 3.3 octave marimbaIntroducing the Adams Academy junior 3. 3 octave marimba The Adams Academy Junior 3. 3 Octave Marimba is designed for young players and classroom use, combining professional inspired sound with a practical, student friendly format. Its 3. 3 octave range allows beginners to explore melodies, scales, and rhythms with confidence, while the carefully selected bars deliver clear, resonant tone for developing pitch recognition and musical expression.