Consider introducing strategies in a variety of ways:

• Describe a strategy and then model it.
• Describe part of a strategy. Ask students to listen and identify the other part, and then model it.
• Ask students to listen for a strategy, and then model it.
• Employ a strategy without telling students, just in the course of taking a chorus in class. Ask students afterwards what they noticed about your improvised solo. Follow up with more direct instruction or modeling, as needed.
• Introduce a strategy to one student. Ask other students to listen for the strategy, and then have the first student model it. This works especially well with strategies that are specific to drum set players.
• Identify a student who employs a strategy before you introduced it (this often happens with variations on the head of the tune). Ask other students what they noticed about the first student's improvised solo.
• Play professional recordings as examples of strategies.