The most common and most likely answer to this crossword clue is the 5 plus 5 letter word TONIC SOLFA
I've seen this crossword clue in The Guardian
T
O
N
I
C
S
O
L
F
A
More clues leading to the result TONIC SOLFA
Buddy explains!
The straight part
We know that "One way to transcribe solo/One way to transcribe solo" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one way to transcribe solo/one way to transcribe solo = tonic solfa.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.