## Repertoire Building and Maintenance – A juggling act? (No 2)

Some further thoughts and ideas on repertoire building and maintenance.

Lets consider a largish list of fairly complex pieces to learn (say 50). In the real world if you are not a professional or studying at conservatoire level or just very talented, it may take several months or more to learn each, but lets assume that we can learn each in 1 week and also that subsequent to the original learning session each cyclical review to get the piece back into shape is also 1 week.

Another piece of sensible advice on Repertoire building & Maintenance is to spend no more than one hour a day on new pieces. For me this effectively means one complex piece at a time (although I accept that you could learn several easier pieces below your current grade in the same period). But for the purposes of modelling 1 new piece a day is it.

So what would be our workload for the two patterns of review previously described (linear or exponential) on a specific day in 1, 2 or 5 years?

**The linear models** are easier to predict. In the simplest (every other week) you have to review 50% of your repertoire each week, as the ratio changes e.g 1 week review and 3 weeks gap then its 25% each week and so on. So with 50 pieces, it would be 25 every other week in the first model.

**The Exponential review models** are less easy to predict. Lets assume that after the first study period (review 0) that review 1 takes place after 1 week, then the second review, the second gap is two weeks, the third gap is three weeks, the fourth gap if four weeks and so forth…. With 50 pieces to learn, and assuming only one new piece at a time, what would be the review pattern on any particular day in 1, 3 or 5 years?

So to start the ball rolling we need a list of 50 pieces, here’s one then:

1=Bach/Busoni Chorale Prelude, Wachet…

2=Bach/Busoni Chorale Prelude, Nunn Komm…

3=Bach/Busoni Chorale Prelude, Zu…

4=Bach/Busoni Chorale Prelude, Herr…

5=Rachmaninoff Prelude c# minor

6=CPE Bach, Solfeggietto

7=Beethooven sonata, Pastorale

8=Beethooven Sonata, Moonlight

9=Beethoven Sonata, Tempest

10=Beethoven, Sonata,Waldstein

11=Debussey, Reverie

12=Debussey, Preludes Book1, La Fille Aux Cheveux de Lin

13=BT Jones, Green Onions

14=Bach, WTC Book1, Prelude & Fugue Cmin

15=Bach Invention 2-part No1

16=Bach Invention 2-part No2

17=Bach Invention 2-part No3

18=Bach Invention 2-part No4

19=Bach Invention 2-part No5

20=Bach Invention 2-part No6

21=Bach Invention 2-part No7

22=Bach Invention 2-part No8

23=Bach Invention 2-part No9

24=Bach Invention 2-part No10

25=Bach Invention 2-part No11

26=Bach Invention 2-part No12

27=Bach Invention 2-part No13

28=Bach Invention 2-part No14

29=Bach/Busoni Tocatta & Fugue Dmin

30=Bach/Busoni Chaconne Dmin

31=Chopin Etude No1

32=Chopin Etude No2

33=Chopin Etude No3

34=Chopin Etude No4

35=Chopin Etude No5

36=Chopin Etude No6

37=Chopin Etude No7

38=Chopin Etude No8

39=Chopin Etude No9

40=Chopin Etude No10

41=Chopin Etude No11

42=Chopin Etude No12

43=Chopin Etude No13

44=Chopin Etude No14

45=Chopin Etude No15

46=Chopin Etude No16

47=Chopin Etude No17

48=Chopin Etude No18

49=Chopin Etude No19

50=Chopin Etude No20

To summarise the model:

- Only 1 new piece at a time
- Multiple pieces for review
- 1 week to learn
- 1 week for each subsequent review
- Each review Gap is equivalent to the review period in weeks i.e review 1 after one week, review 2 is two weeks after review one, review 3 is three weeks after review 2 and so on…

**Question:** What would be for daily review/study lets say in 5000 days time (50 pieces, 5000 days).

After some grunt programming….

**Answer:** Open this DOC Repbuilder_ExponentialModel_20090705 to see the results for all pieces and 5000 individual days study plans. The first piece has been highlighted so you can see the increasing gaps in reviews. In 5000 days time its ** BT Jones & Green Onions**! 😉

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