Down
1. Work of 17 - may be waltzing in the 6? (7)
2. Odd cosmic drone for a period at one megahertz (11)
3. Clothing seen in arid hot India (5)
4. I'm "sane" - a term contrived for "going with the flow"? (10)
5. Essentially, honestly, home (4)
6. Foolish, so mostly 22ac at greatest distance away (9)
7. Dinner provided here (3)
8. Bizarre - a ruler's nightmare (7)
13. Markers - the most serious ones! (11)
14. Specialist role on estate - he may have monopoly? (10)
16. Hot coat he crafted ... it could be a response to cold (9)
18dn,21ac,18ac,20dn. Prince, with sweet production facility, made popular hit of 17 (7 3 3 9 7)
20. see 18dn
23. Frying pan or other kitchen equipment (5)
24. see 26
26dn,24dn. Ottoman local leader greets vagrant (3 4)