3  Conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects, liquids or gases"She's a Beauty" band (5)

 6  "Billboard" listings (6)

11 Articulate in a very careful and rhythmic way (5)

13 Two performers or singers who perform together (5)

15 Utter monotonously and repetitively and rhythmically (6)

18 A composer of words or music for popular songs (11)

20 To exert much effort or energy (6)

24 A musical work that has been created (12)

28 Airs (8)

29 "Whistle While You Work," et al. (5)

30 The text of a popular song or musical-comedy number (6)

31 Choir (7)

33 "Concord of sweet sounds" (5)

35 "Best Of" music tracks, often (4)

37 "The ___ Nun" (1966) (7)

38 Bono handles them for U2 (6)

39 "Batman" prop (4)

40 "Golden" numbers (6)

41 The characteristic sound produced by a bird (8)

 2  Album names (6)

 4  A group of musicians playing popular music for dancing (5)

 5  Affected manners intended to impress others (4)

 7  "Quack" or "cock-a-doodle-doo" (8)

 8  "Thwack!" and "Grrr..." e.g. (6)

 9  A song that is traditionally sung by the common people of a region and forms part of their culture (9)

10 A piece of poetry (6)

12 A message that tells the particulars of an act or occurrence or course of events; presented in writing or drama or cinema or as a radio or television program (7)

14 A person who sings (9)

16 Audio recordings (6)

17 "Everything" order on a hot dog, with "the" (5)

19 Tapes (10)

21 The intersection of two streets (7)

22 A short simple song (or the words of a poem intended to be sung) (7)

23 A song of praise (to God or to a saint or to a nation) (5)

25 A musical work that has been created (6)

26 A narrative song with a recurrent refrain - "Oh! Susanna" and others (7)

27 Architectural style of the Parthenon (9)

32 "Temptation Island" tempters, e.g. (7)

34 A short segment of electronic media, either audio video. (5)

36 "&" follower in some business names (4)