1: Uncharacteristically, Dickenson pens uplifting romantic ballad (5)
3: Also major European capital lawman in northern constellation (9)
8: Part of book covers ballpark legends, using reliable background sources (5)
10: One who wanders amidst fantastic text is one who is very outgoing (9)
11: Get into the archeology scene. (3)
12: Notices substituting first paragraph for up town witticisms (7)
14: 4-down Arias hit high note in some of the lungs (3,3)
16: To initiate into communist units, they carry the vital gas. (3, 5, 5)
18: Double profit repeatedly (5,3,5)
21: Polygraph unexpectedly traps vandal (3)
22: Sea creatures with vocal powers (7)
23: Compete with life in France (3)
25: Switch trains without interest and sit (9)
27: Tired backing cookie brand (5)
28: Detective negotiated nicer post (9)
29: Piece of wisdom from a quiet aristocrat (5)