1: Mineral springs start to moderate involuntary muscular contraction (5)

4: How to get around doing business, essentially (3)

6: Freshen the atmosphere (3)

7: A number going to church for fish (5)

8: Study a French instrument - it's a puzzle (9)

10: Casts off shacks (5)

13: Greek characters suggest dawn (3)

14: Drongo lacks even a pet (3)

15: Navigate by terse directions (5)

2: Expert standing in an area at the front of the stage (5)

3: Ran into a section of the time-table (3)

4: Throw out faulty nib (3)

5: Plots get Cuban revolutionary leader in a terrible mess (7)

6: Charged a couple of hundred, getting exploited (7)

9: An Indian princess fled east repeatedly (5)

11: Encourage horse led with direction. (3)

12: Walesa still embodies how Nobel Laureates soar? (3)