2: Excessively sentimental dunderhead in the river (5)
3: Our neighbour recorded singles in the sub-continent (9)
4: Sounds like a bright child (3).
5: Say again 'Others had food' (7)
6: 'Inane' is not the same as 'inane' (7)
9: Mineral springs start to moderate involuntary muscular contraction (5)
11: Standard style of music rejected (3)