Allen Forte's unique notation system commonly known as Forte Notation has come to be recognised as one of the most successful attempts at providing a means of describing and analysing musical pitch structures that defy interpretation as tonal or 12-note serial systems. Thus, Forte's system is equally at home describing Ives and Stravinsky as it is Schoenberg and Webern.
Such a system able to deal with intervallic relationships from pitch class extrapolations of material has a potential within SCOM to be itself a generator of pitch series.
The function pcs-transpose enables an intervallic statement in symbols or integers to be transposed in accordance with the protocol attached to the transposition of pitch class sets.
(pcs-transpose :integer 3 (pcs :integer '6-Z10))
=> (3 4 6 7 8 10)
(pcs-transpose :pitch 3 (pcs :integer '6-Z10))
=> (d#4 e4 f#4 g4 g#4 a#4)
(pcs-transpose :symbol 3 (pcs :integer '6-Z10))
=> (d e g h i k)
Multiple lists may be processed by writing the transp-value for each list in its own list, thus: