Introduction -- Determining the indeterminate / Philip Thomas -- A discussion of practices used in learning complex music with specific reference to Roger Redgate's "Ausgangspunkte" / Christopher Redgate -- Richard Barrett's "Imaginary trombone" / Barrie Webb -- Re-inventing the oboe / Christopher Redgate -- Berio's "Sequenza IV" : approaches to performance and interpretation / Philip Thomas -- Performing Berio's "Sequenza V" / Barrie Webb -- Performing "Sequenza VII" / Christopher Redgate -- Prescriptive notation : limits and challenges / Mieko Kanno -- Partners in creation / Barrie Webb