Rangers duo Kris Boyd and Chris Burke both grabbed two goals on their debuts as Scotland thumped Bulgaria in their opening game of the Kirin Cup in Japan.
Lone striker Boyd put Scotland ahead with a fine strike and although Yordan Todarov levelled with a low finish, Boyd made it 2-1 from close range.
James McFadden added a third with a flicked volley from Gary Teale's cross.
Chris Burke's superb lob put the Scots further ahead and he sealed a fantastic victory when he tapped in late on.
The inexperience of Walter Smith's team rarely showed throughout an impressive 90 minutes against the side who beat World Cup-bound Japan on Tuesday.
Premier League top-scorer Boyd took just 13 minutes to claim his maiden goal with a fine first-time finish as he latched on to Darren Fletcher's perfectly placed pass to lash in an angled drive.
Bulgarian captain Martin Petrov forced Neil Alexander to stretch to claim his curling free-kick from 20 yards out in the 24th minute.
And, two minutes later, the Bulgarians were level when Valeri Domovchiyski clipped the ball to Svetoslav Todorov and the Portsmouth striker's lay-off to his namesake set up the 24-year-old to slot home from close range.
Boyd, however, put his side back in front two minutes before the break when he was first to react after Stoyan Kolev spilled Russell Anderson's shot following a well-placed cross by Teale.
McFadden replaced Boyd early in the second half and, after hitting the crossbar with a clever free kick, increased Scotland's advantage with 21 minutes to go.
Again Teale was involved, searing down the right wing and sending in a low cross that the Everton striker glanced past Kolev with a deft touch.
Burke came on for Teale in the 75th minute and with his second touch of the ball had also claimed a debut goal for Scotland.
The winger's first touch in international football came when he chested Gary Naysmith's cross into the penalty area and the second saw him lob substitute goalkeeper Nikolay Mihaylov, whose fingertip effort was not strong enough to keep the ball out.
It was to get better for Burke with two minutes remaining when he stabbed the ball home from close range to claim his second and Scotland's fifth.
Scotland face Japan on Saturday and Smith's patchwork squad will be brimming with confidence.
Scotland: Alexander, Murty, Anderson, Weir, Gary Caldwell, Naysmith, Fletcher, Severin, McCulloch, Teale, Boyd. Subs: Turner, Smith, Steven Caldwell, McNamee, Burke, Murray, Rae, McFadden, Miller.
Bulgaria: Kolev, Angelov, Topuzakov, Kirilov, Karaslavov, Wagner, Petrov, Telkiyski, Todarov, Todorov, Domovchiyski. Subs: Mihaylov, Valentin Iliev, Milanov, Georgi Iliev, Genkov, Yanev.
Referee: T Kamikawa (Japan)
Attendance: 5,780