Random Puzzles 

Workings

Hint
Look at the number of letters in each name.

Answer
Yes.

Because there is an odd number of letters in the name.

Workings

Hint
The clue is in the question.

Answer
B.

Reasoning
These are the initial letters of the puzzle itself:
   This
   is
   a
   very
   special
   sequence
   and
   is
   complete
 * but
   what
   is
   the
   missing
   letter

Therefore, B is missing.

Workings

Hint
The answer is over 35.

Answer
The largest total that can be made is 37.

Workings

Hint
Look at the piece by Bach, and the single.

Answer
Composer   Format  Length
Beethoven  album   6
Holst      single  7
Bach       CD      8
Butler     DAT     9

Reasoning
By (1), the piece by Bach lasts 8 minutes. By (3), the single lasts 7 minutes.
Composer   Format  Length
                   6
           single  7
Bach               8
                   9

By (4), the piece by Butler is on the DAT tape. But, by (2), this can't be the shortest, so it must be 9 minutes long.
Composer   Format  Length
                   6
           single  7
Bach               8
Butler     DAT     9

By (1), the CD can't be the shortest, so must be 8 minutes long.
Composer   Format  Length
                   6
           single  7
Bach       CD      8
Butler     DAT     9

The album must therefore be 6 minutes long, and by (3) doesn't contain any Holst.
Composer   Format  Length
           album   6
Holst      single  7
Bach       CD      8
Butler     DAT     9

Which means that the album was the piece by Beethoven.
Composer   Format  Length
Beethoven  album   6
Holst      single  7
Bach       CD      8
Butler     DAT     9