Soft tissue tumors are a very heterogeneous group of tumors in terms of histogenesis, morphology, cytogenetics, molecular biology, clinical manifestation, and prognosis. Their spectrum is fascinating for morphologists and basic scientists alike. Yet precisely this variability in the morphologic manifestation of soft tissue tumors, specifically their histologic and cytologic patterns, presents great difficulties to any effort to categorize them. Although many soft tissue tumors are today defined not only by histology but also by immunohistochemical, cytogenetic, and molecular biological findings, the histogenesis of many soft tissue tumors, in particular malignant ones, continues to be unknown. This is associated with the fact that the actual precursor cells that lead to these tumors have frequently not yet been identified. For this reason, the customary classification of malignant soft tissue tumors is primarily not histogenetic, but actually according to the dominant phenotype, however characteristic it is. Of course, an exact morphologic examination of soft tissue tumors con tinues to be an essential prerequisite for making a diagnosis and determining a therapy. The use of a wide range of additional modern examination techniques, however, can make a substantial contribution toward more precisely defining the biological behavior of a tumor, which without doubt can have therapeutic implications.

From Sight to Sound provides practical and creative techniques for classical improvisation for musicians of all levels and instruments, solo or in ensembles. These exercises build aural and communicative skills, instrumental technique, and musical understanding. When students use their instruments to execute and improvise on theoretical concepts, they make vivid connections between abstract ideas and their own playing. This then allows students to unite performance with music theory, ear-training, historical style and context, chamber music skills, and listening skills. Many of the exercises in this book are designed for players working in pairs or small groups to encourage performers to communicate with one another and build an atmosphere of trust in which creativity and spontaneity may flourish.