They are the first and last Psalms in the book of Psalms as you no doubt know, and they are both of men praising the Lord - the first, in a man's whole life, "whose delight is in the law of the Lord"; and the last, in all flesh praising the Lord with all their breath.
The difference is purely in placement. Psalm 1 is the first and Psalm 150 is the last.
"Praise" is mentioned 214 times in the King James Version of the Bible.
Not in so many words, but certainly the idea can be found in several scriptures. The Hebrew word "Halleluyah"(Lat:Alleluia) literally means: 'Praise Yah(Jah)' (a shortened form of God's name: YHWH(Jehovah)- Hallelu Yah) often translated as "Praise the LORD'. Many scriptures describe the 'goodness of the LORD' and finish with this exclamation. (Psalm 106:1)(Psalm 104:1-35)(Psalms 111:10-112:1)(Psalm 135:1-3)(Psalm 146:1, 2) (Psalms 146:10-147:1)(Psalm 148:1-14)(Psalm 149:1) (Psalm 150:1-6) and again in (Revelation 19:1-6)
There are 29 numbers between 1 and 150 that are divisible by five.
What are prime numbers from 1-150?
2 x 3 x 5 x 7 = 210 11 + 13 + 17 + 19 = 60 The difference is 150 .
99 - Psalm 1 - Psalm 99
The difference is 1 .
There are 50 multiples of three that fall between and one and 150.
The difference between -1 and 3 is 4.
Psalm 100:1 - Psalm 98:4 100:2 - Psalm 2:11 100:4 - see 95:2 100:5 - 136:1
The Bible does not list a 'guitar' by name, but mentions: "Harps, 'stringed instruments' and cymbals"(1 Chronicles 25:1) along with lutes, 'ten stringed instruments'(Psalm 92:3) ,flute, horn, pipes, trumpets(Numbers 10:8)(2 Chronicles 7:6), tambourines, sistrums (2 Samuel 6:5; Psalm 150:5)(Psalm 150:3-5) and many instruments that King David made specifically for God's praise(1 Chronicles 23:4, 5).
Mean = (27+27+29+32+35)/5 = 150/5 = 30 Median = 29 Difference = 1