Editing Classical guitar (section)

===Alternation=== <!--This section should be moved to the Classical guitar technique article; it is too detailed for the general information the section Performance deals with in the context of this article which is a general introduction to the Classical guitar-->
To achieve tremolo effects and rapid, fluent scale passages, the player must practice alternation, that is, never plucking a string with the same finger twice in a row. 
Using '''p''' to indicate the thumb, '''i''' the index finger, '''m''' the middle finger and '''a''' the ring finger, common alternation patterns include:
* ''i-m-i-m'' : Basic melody line on the treble strings. Has the appearance of "walking along the strings". This is often used for playing [[Scale (music)]] passages.
* ''p-i-m-a-i-m-a'' : Arpeggio pattern example. However, there are many arpeggio patterns incorporated into the classical guitar repertoire.
* ''p-a-m-i-p-a-m-i'' : Classical guitar tremolo pattern.
* ''p-m-p-m'' : A way of playing a melody line on the lower strings.