Playing Bluesy or Light - Tip #1: E or F
There are two ways to easily control whether you're playing bluesy or light in 2nd Position. Today I'll talk about one of them. The 5+ (E on the C Harmonica) is light and the 5 (F) is bluesy. So... if you want your licks to sound bluesy, choose the 5 over the 5+. If you want your licks to sound light, use 5+ over the 5.
These relationships also occur in different octaves. For playing bluesy choose the 2" F over the 2+ E... and vice-verse... and 9 F over the 8+ E... and vice-verse.
To sum up... use draw for bluesy (F) and blow for light (E).