Summertime Opus 37 Cm9-F9 clarification Home › Forums (Vol1 & 2) › Jazz Etudes › Summertime Opus 37 Cm9-F9 clarification Tagged: Optus 37 This topic has 2 replies, 2 voices, and was last updated 2 years, 5 months ago by David Grima. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts October 30, 2021 at 8:17 am #10252 David GrimaParticipant Hi Richie, Page 90, Lesson book vol 2, Summertime etude – Optus 37. The footnote states that the Cm9 – F9 are functioning diatonically as the I-7 and IV7 of the natural minor key. Can you clarify please? Isn’t the IV of Cm9 (natural minor) F-7, hence the F9 in this case is not diatonic? Thanks David October 30, 2021 at 3:22 pm #10254 RichieKeymaster Hi David, Thanks for pointing that out…it should read of the “melodic minor” and NOT “natural minor”! Should be fixed in the upcoming update this coming week. Richie October 31, 2021 at 11:02 pm #10257 David GrimaParticipant Thanks Richie, That makes sense now. Cheers David Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In