Coral cut the price of the former Andre Fabre inmate to 14-1 from 20-1 after a telephone tipping line picked him as their likely Guineas winner.
William Hill have also slashed his odds, with the firm now going 10-1 from 20-1.
The son of Singspiel, who won a Group Three race in France as a juvenile, is set to be partnered by Jamie Spencer, as Godolphin’s first jockey Frankie Dettori has elected to ride Lateen Sails.
Last time out Songlark finished second to Victory Moon in the UAE Derby at Nad Al Sheba and Spencer is expecting a good run at Headquarters.
“I’m looking forward to riding Songlark. We know he will get the trip and he will like the ground so I’m expecting a good run from him,” he said.
“He was beaten by a four-year-old last time so it was a good effort from a three-year-old at that time of the year.”
Another jockey looking forward to his ride is Willie Supple, who partners Muqbil in the colts Classic before riding Khulood in the Sagitta 1000 Guineas on Sunday.
Supple only picked up the rides on the pair after Richard Hills picked up a lengthy suspension that ruled him out of the meeting.
However, Muqbil, who is trained by John Dunlop, was ridden by Supple when landing the Greenham Stakes at Newbury last month and Supple is looking forward to renewing the partnership.
He said: “I am very pleased to get rides in the first two Classics of the season. The only thing is that they have come in unfortunate circumstances in as much as Richard would have ridden them but he is suspended.
“The colts’ race looks more open. I won the Greenham at Newbury on him and he did it very well that day. He goes there with as good a chance as anything else in the race and I’m looking forward to riding both of them.
“As I said I feel sorry for Richard, but it’s good from my point of view to get the opportunity and I may be even happier come Monday,” he added.
Both Bryan Smart and Clive Brittain are expecting big runs from their respective outsiders in the race, Monsieur Bond and Lundy’s Lane.
Smart sends the son of Danehill Dancer for the race but Monsieur Bond is available at 50-1 or longer with most bookmakers.
Monsieur Bond’s price belies his juvenile form though, as he finished a three-quarter of length second to fellow Guineas runner Zafeen in the Dubai Duty Free Mill Reef Stakes at Newbury last year.
Smart’s charge also finished a length behind Somnus in the betabet Two-Year-Old Trophy at Redcar, with subsequent Dewhurst winner, and Guineas runner, Tout Seul just in front of him.
The Hambleton House handler said: “I could not be more pleased with him. It makes me laugh that he’s 100-1 with some when Tout Seul only beat us three-parts of a length giving away 3lb, while Mick Channon’s horse beat us a neck in a Group Two.
“He wasn’t 110 per cent wound up for his Classic Trial and we’re 100-1.”
Monsieur Bond made his seasonal reappearance in the Sky Bet Thirsk Classic Trial last month when he finished just a length behind Royal Dignitary in third place on unsuitably firm ground.
The winner has since boosted the form by finishing third in the Premio Parioli (Italian 2000 Guineas) and Smart is anticipating a good showing from Monsieur Bond at Headquarters.
“I’m over the moon with him. I think it’s the most open Guineas for years and it will be interesting to see what draw we get. We are looking forward to a big run,” he added.
Brittain is also expecting a good showing from Lundy’s Lane as he bids to add to the 1991 success of Mystiko.
Lundy’s Lane showed a marked improvement on previous form to run Hurricane Alan to a length and a half in the Craven Stakes and Brittain was particularly pleased to see him run so well after finishing seventh to Victory Moon in the UAE Derby at Nad Al Sheba just a few weeks before.
“He’s worked very well since the Craven and I think he’s going there to run a very good race,” said Brittain.