Key signatures and intervals
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Transcript of Key signatures and intervals
LearningOutcomes
• Bytheendoftoday’ssession,studentswillbeableto:– Understandtheprac7caluseofkeysignatures– Developamethodforiden7fyingandconstruc7ngmajorkeykeysignatures
– Developamethodforiden7fyandconstruc7ngnatural/rela7veminorkeykeysignatures
ScalesReview
• Whatisascale?• WhatintervalpaLerncharacterizesaMajorscale?
• WhatintervalpaLerncharacterizesaNaturalMinorscale?
• Keysignaturesputtherequiredaccidentalsforvariousscalesatthebeginningofapieceofmusic
• Theyareplaceddirectlytotherightofthecleff,justbeforethe,mesignature.
WhyKeySignatures
• Easiertoreadmusic• Withtheaccidentalsofthekeysignatureatthebeginning,thekeyisrecognizableimmediately,evenifthereisalotofchroma7caltera7onsaTerwards.
Placement
• TheplacementoftheaccidentalsinakeysignaturefollowsarigidpaLern.
• Thissequenceistheresultofthecircleof5ths• Eachsuccessivenotenameisa5thaboveorbelowtheprecedingpitch.
• Tobelogicallysequenced,thebuildingofkeysignaturesfollowsacycle
Placement
• Inordertobeimmediatelyrecognizable,keysignaturesmustalwaysbeplacedinthisexactorderonthestaff
• SeeExample2onpage14
RecognizingKeySignatures
• Knowthenumberofsharpsandflatsused• Forflatkeysthemajorkeyisrepresentedbytheflatbeforethelastflat
• Forsharpkeys,themajorkeyisahalfstepabovethelastsharp
Rela7veMinor
• Eachmajorkeysignaturehasarela7venaturalminorwhichusesthesamesetofnotes
• Therela7veminorforeachisthe6thscaledegreeofthemajorscale
• Eg.CDEFGABC• Whatistherela7veminortoFmajor?• FGABbCDEF