A 12 tone composition
Uses a single note 12 different times
Uses a Variety of notes and pattern of 12 beats
Uses each of the 12 notes of a chromatic scale before repeating a note
Uses 12 beats of rest before Each new tone is played
Here is a possible 12-tone composition following the given criteria:
A B C C# D# E F F# G A# B G#
E D# C# A# B # D C B G F
Rest 12 beats
Rest 12 beats
F G# B C# D A# E D# A G F# C
Rest 12 beats
Rest 12 beats
G D# F# B E A C# G# A# C F
Rest 12 beats
Rest 12 beats
B G C# D F# E A D# A# G# C
Rest 12 beats
Rest 12 beats
A# C# A E G# D B F# C F G
I hope this composition meets the required criteria.