I have been thinking about this case on and off for years as to me it's very sad and odd circumstances haunt me and so I would like to offer some thoughts about it.
I think this really was suicide and not a murder. I also have a feeling the note was not written by him. The reference to 'gloves on his hands' may well be an observation of him, written by someone else who was aware that he suffered from some type of mental illness which caused him such a phobia about germs that he was commonly known by others to regularly put on rubber gloves whenever in a potentially threatening public area or when exposed to anything commonly perceived as potentially 'germy'.
In that context, the note was perhaps mocking this aspect of his character? I am thinking maybe he was jilted by a lover who used this idiosyncrasy of his to attack his character. By contextualizing it in nursery rhyme form, it could be interpreted as projecting humiliation onto this behavior of his as something childish, weak and immature.
In the context of what I'm stating about the note, the line, 'Blood on his toes' may be an attempt to point out to him that he's literally walking on ground saturated in germs, resulting from it being that of a city filled with acts occurring on a daily basis that cause blood to be spilt, blood which often falls to the ground. By making mention of this the writer may be attempting to make him feel even more uncomfortable and vulnerable in an environment in which (as the use of latex gloves would prove) he already feels threatened.
It may also be a reference to some other act of violence that he was either himself responsible for, or which had happened to someone he was close to or to a group of others close to him, this perhaps even being a trigger for the initial manifestation of mental illness in him, including being mysophobic (ie a fear of germs) known by the writer of the note.
I have considered also that this written reference to blood, which seems to indicate a foreknowledge or a prediction of his eventual, bloody death by gunshot, may also be a reiteration of an instruction he or a gang he was a member of may have received that a victim was required from within the ranks of a that gang in order to settle some dispute of a 'life for life' type nature.
I say this because it is a known that in some ethnic culture based subsections of organized criminals (where honor and respect are known to be traditionally highly valued traits involving an established, mutually respected etiquette), disputes are sometimes rationally and diplomatically settled, in order to keep the matter within the closed ranks of these underground criminal organizations (to the advantage of all concerned) and in order for their actions to remain hidden from both the perception of their adoptive society at large and the police force thereof. In that context it may been that this man did indeed commit suicide and did so as a gesture fulfilling a blood debt owed to another gang, and by doing so, was protecting members of his own family (who may also have been members of that criminal group or gang) and who were in danger of having bloody retribution enacting upon then if he had not chosen to kill himself, instead. However, I find this theory somewhat illogical and flawed. (Potentially, it's more likely that this theory may be the key aspect of an elaborate delusion constructed by this mentally ill individual which eventually motivated him to actually commit suicide.)
The line, 'He shall have music wherever he goes' possibly has some relation to a scenario where this man was being pursued by someone he felt he could never escape from. Someone, (or some group), with enough confidence in their own power to include in their threat the notion that they were effectively inescapable. This might explain why he was located at a major point of transit, because he felt he may have some small chance of escaping the wrath of whoever it was that was pursuing him, but realized when arriving at this point of embarkation that there really was no chance of escape at all. This would indicate, if we're considering a criminal group, that it must have had massive influence and a national membership and a broad scope to its operations.
The 'music' which the note refers to may also be a reference to a traditional criminal justice related colloquialism for the accepting of an inevitable, just punishment for one's actions, that is; 'to face the music'. This aspect of it might then lend it to being read as a reference to an eventual fate from the result of retribution possibly perceived by him as inescapable and thereby offering to him only the route of suicide as away out.
I'd hazard a guess that this was the case, since an individual or even a smaller, unaffiliated group of criminals would not be able to back up a threat of this magnitude, which given this man's suicidal response to a threat which one might read as, 'there's nowhere to hide' would indicate it as a serious threat and quite true.
The writer of the note may have been a criminal gang (Dragons) affiliated member who was now the new romantic partner of this man's former lover and the content of the note could have been written in jealousy and as a threat toward him to keep away, centering in on his known psychological vulnerabilities, as previously speculated upon. He then may have been despondent enough, as result of the threatening nature of the note's content and the loss of his lover, to kill himself.
He may also have been an illegal immigrant, and this may indicate the reason why he felt he could not trust the authorities to protect him from those who pursued or were threatening him. Given this all happened at a train station, cross country smuggling may also factor into this scenario.
I doubt this is simply a case of a suicide from mental problems and lean toward it being something associated with this man's connection to a large criminal organization.
(I could be wrong though!)
