FLUTE

Good Finger Coordination
Upper Front Teeth Without a Gap
Ability to Reach with the Right Arm to Hold the Flute Parallel
Good Breath Support 
Medium Lips Without a Peak in the Middle 
Closed Hole Flutes are preferred for beginners due to hand size and ease of playing
Open Hole Flutes have better tone quality and the open holes make faster phrases easier to play
The more silver in a flute, the better tone quality and projection (Beginner flutes are nickel plated, intermediate flutes generally have a sterling silver headjoint and professional flutes are generally all or sterling silver)

OBOE

Good Finger Coordination
Strong Front Teeth
Excellent Sense of Pitch
Strong Breath Support
Medium Thin Lips

CLARINET

Good Finger Coordination
Strong Front Teeth
Ability to Reach the Distance Between the Keys
Fingertips Broad Enough to Cover Open Hole Keys
Wooden clarinets tend to have a richer and deeper tone than the “thin” sound of a plastic clarinet.

SAXOPHONE

Good Finger Coordination
Strong Teeth
Medium to Large Lips
Ability to Reach Around the Saxophone
Strong Pinkie Fingers

TRUMPET

Even Upper and Lower Jaw
Good Alignment of Front Teeth
Sense of Pitch
Thin to Medium Lips

FRENCH HORN

Even Upper and Lower Jaw
Front Teeth in Normal Alignment
Sense of Pitch
Thin to Medium Lips
Good Breath Support

BARITONE/EUPHONIUM

Even Jaw Structure
Front Teeth in Alignment
Sense of Pitch
Medium to Full Lips
Tall Enough Upper Body to Reach Instrument

TROMBONE

Even Jaw Structure
Sense of Pitch
Medium to Full Lips
Right Arm Long Enough to Handle Slide Positions

TUBA

Even Jaw Structure
Sense of Pitch
Medium to Full Lips
Tall Enough Upper Body to Reach Instrument

PERCUSSION

Excellent Sense of Rhythm
Sense of Pitch
Well-Coordinated Hands

STRING INSTRUMENTS (Violin, Viola, Cello)
Sense of Pitch
Well-Coordinated Hands