Loop it and sing it

C#m, A, G#, C#m


and some of the matching fills
    C#m      A       G#     C#m
-------------------------------|
--9--7-----7-5----5--7-----7-9-|
--9--8-----8-6----6--8-----9-9-|
-------------------------------|
-------------------------------|
-------------------------------|

Easy song to improv on. You can play the d note any time and it never sounds out of place.