Vision (1) Twenty-first century (1) Time (1) Research (1) Perseverance (Theology) (1) Musical instruments (1) Music--Instruction and study (1) Music (1) Literature (1) Bibliography (1) Attachment and garnishment (1) Ability (1) Música--Enseñanza (1) Evidencia (1) Siglo veintiuno (1) Estudio (1) Perseverancia (1) Embargo (1) Literatura (1) Instrumentos musicales (1) Vista (1) Bibliografía (1) Investigación (1) Música (1) Tiempo (1) Aptitudes (1)