Originally presented as the author’s dissertation (Ph. D.–Princeton University, 1995).

This essay and the String Quartet nο. 2 together constitute the dissertation but are otherwise unrelated. 
Professors Scott Burnham and Peter Westergaard were principal readers for this dissertation. 

CONTENTS

ACKNOWLEDGMENTS

LIST OF MUSICAL EXAMPLES

LIST OF DIAGRAMS

INTRODUCTION

CHAPTER I

The “Diabolus” in Sibelius’ Fourth Symphony

The catharsis effected by the tritone

CHAPTER II

Continuity in the Seventh Symphony

Conclusion

APPENDIX

An analysis of the third expansion wave (mm. 72-88) of the Fourth Symphony’s first movement

BIBLIOGRAPHY